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< Back to Issue 5 Why Do We Gossip? Lily McCann 24 October 2023 Edited by Celina Kumala Illustrated by Rachel Ko Have you ever heard of ‘Scold’s bridle’? A metal restraint, fitted with a gag, that was strapped about the face as a medieval punishment for excessive chatter; gossip, it seems, was not received too fondly in the Middle Ages. While the bridle may have gone out of fashion long ago, today the word gossip still carries negative connotations. The Oxford Dictionary, for instance, defines gossip as “informal talk or stories about other people’s private lives, that may be unkind or not true” (Oxford Learner’s Dictionaries, 2023). Entries in the Urban Dictionary use yet stronger terms, going so far as to describe gossip as the “garbage of stupid silly ignorant people” (Lorenzo, 2006). Is this too harsh? Cruz et al. (2021) propose a much more neutral definition in their analysis of frameworks to study gossip, concluding that gossip is “a sender communicating to a receiver about a target who is absent or unaware of the content”. Whether the gossip conveys positive or negative content — otherwise known as its valence — is not a requirement of the definition itself. Gossip, then, is not always “unkind” (Oxford Learner’s Dictionaries, 2023) or “garbage” (Lorenzo, 2006). In fact, with a bit of further reading, we can see that this “informal talk” has played an important part in our evolution and even serves positive purposes in society. In the first sense, gossip is an important facilitator of safety. It allows dangerous situations to be identified: spreading the knowledge that a certain individual is prone to violence, for instance, ensures the rest of a community takes care of their own safety with regards to that individual. On a different note, passing about the fact that another individual is skilled in certain aspects of resource procurement allows wider access to these resources. It is easy to see in these examples how gossip could give a selective advantage in the survival of societies. But the influence of gossip goes further than this. It has been shown that gossip in fact encourages cooperation and generosity (Wu et al., 2015). How? The crucial mediator is reputation (Nowak, 2006). Reputation is incredibly important - see Taylor Swift’s 2017 album for more. A poor reputation leads to ostracisation, and for an individual in prehistoric societies, this could be fatal. Cultivating a good reputation among peers thousands of years ago, as today, improves the chances of success in life by increasing access to resources and the willingness of others to help you. Positive gossip can facilitate all this. So, how do we foster positive gossip? What will encourage someone to put in a good word for us? The most effective approach is to act in a way that benefits that individual. It predisposes them to spread the word of our generosity, helping to build a reputation for goodness that will in turn have positive outcomes for ourselves. Thus, it’s easy to see how behaviours that foster good gossip are incentivised in our everyday lives. This propensity to spread the knowledge of how certain individuals interact with others has been incredibly impactful in the development of human societies. The fact that our species can flourish and sustain itself in such immense populations requires a high level of cooperation - which enables us to share resources and productivity - even with people we do not know. Otherwise known as indirect reciprocity, this ability to work with strangers is enabled by reputation (Nowak, 2006). How else do we know that it is safe to interact with a stranger, other than through the means of gossip, which informs us of their reliability and trustworthiness? But what about when gossip is incorrect? The Oxford definition hints at the possibility that information spread through gossip “may be…not true”. Can untrue gossip hinder our progress, by limiting interactions with individuals who may have the potential to help us, or promoting those interactions that would better have been avoided? And if gossip can be incorrect, does that not render reputation meaningless? What is the incentive to be good, if gossip could label you as a bad egg, regardless (Nieper et al., 2022)? Incorrectly negative gossip can be extremely impactful for the subject of that gossip. Studies have shown that it decreases productivity and prosocial behaviour - not to mention burdening victims with the psychological effects of ostracisation, injustice and loneliness (Kong, 2018; Martinescu et al., 2021). Through gossip, we can exert immense power over other beings. It is understandable, then, that we fear gossip, and try to discount it by painting it as “garbage” (Lorenzo, 2006), “unkind” or “not true” (Oxford Learner’s Dictionaries, 2023). And yet, whilst negative gossip can be a detriment, positive gossip can yield great benefits, reinforcing prosocial behaviour, fostering cooperation and promoting generosity. So, rather than fearing gossip, perhaps we ought to acknowledge its benefits and harness it for good. Perhaps it's worth considering how we can each use gossip to exert a bit of good upon our world. References Dores Cruz, T. D., Nieper, A. S., Testori, M., Martinescu, E., & Beersma, B. (2021). An Integrative Definition and Framework to Study Gossip. Group & Organization Management, 46(2), 252-285. http://doi.org/10.1177/1059601121992887 Kong, M. (2018). Effect of Perceived Negative Workplace Gossip on Employees’ Behaviors. Frontiers in Psychology , 9(2728). http://doi.org/10.3389/fpsyg.2018.01112 Lorenzo, A. (2006). Gossip . Urban Dictionary. Accessed October 10, 2023. https://www.urbandictionary.com/define.php?term=gossip Martinescu, E., Jansen, W., & Beersma, B. (2021). Negative Gossip Decreases Targets’ Organizational Citizenship Behavior by Decreasing Social Inclusion: A Multi-Method Approach. Group and Organization Management, 46(3), 463-497. http://doi.org/10.1177/1059601120986876 Oxford Learner’s Dictionaries. (2023). Gossip - definition . Accessed October 10, 2023. https://www.oxfordlearnersdictionaries.com/definition/american_english/gossip_1#:~:text=gossip-,noun,all%20the%20gossip%20you%20hear . Nieper, A. S., Beersma, B., Dijkstra, M. T. M., & van Kleef, G. A. (2022). When and why does gossip increase prosocial behavior? Current Opinion in Psychology, 44, 315-320. http://doi.org/10.1016/j.copsyc.2021.10.009 Nowak, M. A. (2006). Five Rules for the Evolution of Cooperation . Science, 314(5805), 1560-1563. http://doi.org/10.1126/science.1133755 Wu, J., Balliet, D., & Van Lange, P. A. M. (2015). When does gossip promote generosity? Indirect reciprocity under the shadow of the future. Social Psychological and Personality Science, 6(8), 923-930. http://doi.org/10.1177/1948550615595272 Wicked back to

< Back to Issue 7 A Coral’s Story: From thriving reef to desolation by Nicola Zuzek-Mayer 22 October 2024 edited by Arwen Nguyen-Ngo illustrated by Amanda Agustinus The sun is shining. Shoals of fish are zooming past me, leaving their nests where I let them stay for protection from bigger fish. I look to my right and the usual fish have come to dine from me, filling their bellies with vital nutrients. I feel proud of our coexistence: I feed the big fish and provide shelter to small fish, whilst they clean algae off of me. I am the foundation of the reef. I am the architect of the reef. Without me, there would be nothing. I can’t help but think that the reef is looking vibrant today. A wide variety of different coloured corals surround me in the reef, with some of my closest friends a stone’s throw away. We’ve all known each other for our entire lives, and it’s such a close knit community of diverse corals. Life is sprawling in this underwater metropolis, and it reminds me of how much I love my home. But recently, I’ve heard some gossip amongst the city’s inhabitants that this paradise may change soon – and for the worse. Something about the land giants destroying our home. I refuse to believe such rumours – why would they want to destroy us? Our home is so beautiful, and we have done nothing to hurt them. Our beauty attracts many of them to come visit us, and most never hurt us. But sometimes I feel pain when they visit on a particularly sunny day, when I see white particles drop down to the reef and pierce my branches, polluting the city. My friends have told me that these giants wear something called ‘sunscreen’ to protect themselves from the sun, but their ‘protection’ is actually poisoning us. I hope that they realise that soon. Another thing that I’ve noticed recently is that the ocean is feeling slightly warmer than before, and my growth is slowing more. Yes, I’m concerned, but I don’t think that the issue will get worse. 30 years later… The sun is blisteringly hot. I feel sick and the water around me is scorching hot. The vibrant colours of the reef are disappearing, and there are fewer organisms around. We used to be so diverse, but so many species of fish have died out. It’s eerie to see the area so desolate. My body is deteriorating and I feel so much more fragile than before. I feel tired all the time, after using so much energy to repair my body in the acidic water. I sense myself becoming paler, losing all colour in my body. I struggle to breathe. My coral friends and family are long gone, perished from the acidity of the ocean. I am the last one remaining. In my last moments, I can only wish to go and relive the past. I wish that the land giants had done more to help not only my city, but other reef cities around the world. All the other cities are empty now, and all ecosystems are long gone. If only someone had helped our dying world. Previous article Next article apex back to

< Back to Issue 9 Enter . . . the Anthropocene? by Rita Fortune 28 October 2025 Illustrated by Zara Burk Edited by Kylie Wang We live in a time where humanity’s impact on the world around us is clearly visible. From the neverending barrage of information about climate change, to extinction and habitat loss, the consequences of our actions are impossible to avoid. There’s no denying that the world around us is changing, but what if there are deeper implications? What if our impact on the planet will be apparent thousands, even millions of years into the future? Have we changed our planet’s system to such an extent that the birth of our species defined a new geological epoch? The geological timescale is how we understand the relative timing of past events. From the advent of life, to mass extinctions, all of it is documented in the rock record. Our geological past is divided into formalised time periods: eons, eras, periods, epochs and ages. These time periods are generally divided by major changes visible in the rock record, such as mass extinctions, major climate shifts, or changes in magnetic polarity, with absolute ages determined by radioactive dating (1). Currently, we are formally sitting in the Holocene Epoch, which began around 11.7 thousand years ago, with the end of the last glacial maximum and beginning of the subsequent warmer interglacial phase (2). However, due to the enormity of impact on earth systems that humanity has had, especially since the dawn of the industrial revolution, some scientists are pushing for the formalisation of a new epoch: the Anthropocene. The concept of the Anthropocene was first officially coined by Paul Crutzen and Eugene Stoermer in 2002 (3). Initially, it was used to recognise the exploitation of earth’s resources by humankind, including the emission of greenhouse gases, urbanisation of land, and increase in species extinction rates. Crutzen and Stoermer suggested the beginning of the Anthropocene to be in the late 18th century, as, in the last 200 years, the “global effects of human activities have become clearly noticeable” (3). The concept, at its core, has remained the same since then, but there have been some changes and debate around formal definitions and informal uses of the term. The Anthropocene has been adopted in popular culture, with its broad use encompassing humanity’s interactions with the earth, but there is ongoing debate about its formal use. Furthermore, although the theory traces its origins to earth system science, efforts to formalise the Anthropocene have been multidisciplinary, involving not only stratigraphers and palaeontologists, but also experts from various scientific backgrounds (4). Formalising the Anthropocene as an epoch distinct from the Holocene relies on being able to find stratal evidence in the rock record for where this transition took place (4). There are countless pieces of evidence for our impact on Earth’s systems.Yet, there is still debate around which ones can be used to define the Anthropocene. The Anthropocene Working Group identified as potential evidence for the beginning of the Anthropocene: the increase in sedimentation and erosion rates; changes to carbon, nitrogen and phosphorus cycles; climate change and increase in sea level, and; biotic changes such as unprecedented spread of species across Earth (4). Many of these impacts will leave permanent evidence in the geological record, indicating our existence long after our civilisations have crumbled. There are many potential ways to define the beginning of the Anthropocene. Crutzen suggested this crucial moment to be the invention of the steam engine, which led to the industrial revolution, often used as a baseline to compare our current climate to (3). However, evidence of industrialisation from this time is really only visible in Europe, with sediments from the Southern Hemisphere showing no change (5). More recently, it has been posited that the detonation of the first atomic bomb in 1945 should be the official marker of the Anthropocene, as it deposited a thin stratal layer of radionuclides, which do not naturally occur in the environment (6). While it’s clear that humans are a major source of change on Earth, some say that it does not necessarily mean we’ve entered a new epoch. Although geological time periods are often delineated based on environmental change, not every environmental change necessitates the creation of a new epoch. There have been past periods of (relatively) rapid climate change that are not associated with new time periods. An example of this is the Palaeocene-Eocene Thermal Maximum (PETM). During this time, there was significant global warming, change in habitats, and migration in species. This warm period lasted for approximately 100,000 years, but there were no mass extinctions. Once temperatures returned to normal, ecosystems essentially returned to how they were before the event (7). Geologically speaking, the proposed Anthropocene is a minuscule amount of time. Although the effects are extreme, if we stopped all emissions right now, it is possible that within 5000 years the climate could return to pre-industrial levels (8). Another argument presented by some authors is that the stratigraphic basis for the Anthropocene doesn’t exist yet, and is merely expected to exist in the future. Many structures which have an anthropogenic origin, such as excavation, boreholes and mine dumps, are not yet geological strata. Additionally, in strata that have recorded anthropogenic change, such as speleothems, marshes, lake and ocean floor sediments, the layers representing the Anthropocene would be so thin as to be difficult to distinguish from the underlying Holocene sediments (6). Without the gift of hindsight that has allowed scientists to examine previous epochs, it is difficult to say whether or not the change we currently see will be significant enough on a geological scale to officially move us into a new epoch. There has been suggestion that instead of a new epoch, the Anthropocene could be a Sub-Age, or an Age within the Holocene Epoch (4); acknowledging our profound impact on the earth, but believing that the earth’s system will eventually return to pre-industrial levels. Further complicating the matter, there are suggestions that humans have been altering the earth’s climate since long before the industrial revolution. Evidence shows that a rise in CO2 occurred with the advent of farming by early humans, 7000 years ago. Around the same time, there was also a rise in atmospheric methane, which has been attributed to rice paddies and livestock (9). With the increase in human population happening at this time, there was likewise an increase in land clearance, both to accommodate dwellings and farming. Even though these emissions and land clearing are tiny by today’s standards, they may have been enough to push our climate away from heading into its next glacial period, priming the warmer conditions we experience today. Some arguments have even been made that irreversible impact by humans stretches back even further, to the Pleistocene extinctions of megafauna across multiple continents (10). There is no doubt that humans have had, and are having, a massive impact on the environment. The atmosphere and oceans will take thousands of years to recover from their current level of warming. However, these massive changes do not necessarily mean that we have entered a new epoch. Although it appears there will be ample stratigraphic records of our impacts on this planet, without hindsight, it is difficult to see just how much change we have created. In the context of geological time, humans have been around for a minutely short period. Although what’s happening today might seem dramatic to us, it is possible that millions of years in the future all we will have left behind is a few centimetres of ocean floor sediment. Either way, the Anthropocene as an informal term for our current time period is valuable for acknowledging the consequences of our actions, and a reminder of the permanence of our record. References 1.University of Calgary. Geologic time scale. Energy Education. 2024. Accessed October 21, 2025. https://energyeducation.ca/encyclopedia/Geologic_time_scale#cite_note-GTS-3 2. Walker M, Johnsen S, Rasmussen SO, Popp T, Steffensen JP, Gibbard P, et al. Formal definition and dating of the GSSP (Global Stratotype Section and Point) for the base of the Holocene using the Greenland NGRIP ice core, and selected auxiliary records. J. Quaternary Sci. 2009;24(1):3–17. doi: 10.1002/jqs.1227 3. Crutzen PJ, Stoermer EF. The ‘Anthropocene’ (2000) [Internet]. Benner S, Lax G, Crutzen PJ, Pöschl U, Lelieveld J, Brauch HG, editors. Cham: Springer International Publishing; 2021. 3 p. (Paul J. Crutzen and the Anthropocene: A New Epoch in Earth’s History). Available from: https://doi.org/10.1007/978-3-030-82202-6_2 4. Zalasiewicz J, Waters CN, Summerhayes CP, Wolfe AP, Barnosky AD, Cearreta A, et al. The Working Group on the Anthropocene: Summary of evidence and interim recommendations. Anthropocene. 2017;19:55–60. doi: 10.1016/j.ancene.2017.09.001 5. Pare S. Nuclear bombs set off new geological epoch in the 1950s, scientists say. Live Science. 2023. Accessed October 21, 2025. https://www.livescience.com/planet-earth/nuclear-bombs-set-off-new-geological-epoch-in-the-1950s-scientists-say 6. Finney S, Edwards L. The “Anthropocene” epoch: Scientific decision or political statement? GSA Today. 2016;26:4–10. doi: 10.1130/GSATG270A.1 7. The Editors of Encyclopaedia Britannica. Paleocene-Eocene Thermal Maximum (PETM). Britannica. 2023. Accessed October 21, 2025. https://www.britannica.com/science/Paleocene-Eocene-Thermal-Maximum 8. The Royal Society. If emissions of greenhouse gases were stopped, would the climate return to the conditions of 200 years ago? The Royal Society. 2020. Accessed October 21, 2025. https://royalsociety.org/news-resources/projects/climate-change-evidence-causes/question-20/ 9. Ruddiman WF, He F, Vavrus SJ, Kutzbach JE. The early anthropogenic hypothesis: A review. Quaternary Science Reviews. 2020;240:106386. doi: 10.1016/j.quascirev.2020.106386 10. Doughty CE, Wolf A, Field CB. Biophysical feedbacks between the Pleistocene megafauna extinction and climate: The first human-induced global warming? Geophys. Res. Lett. 2010;37(15). doi:10.1029/2010GL043985 Previous article Next article Entwined back to

< Back to Issue 9 Unravelling the Threads: From the Editors-in-Chief & Cover Illustrator by Ingrid Sefton, Aisyah Mohammad Sulhanuddin & Anabelle Dewi Saraswati 28 October 2025 Illustrated by Anabelle Dewi Saraswati Edited by the Editor-in-Chiefs Innovation evolves, and perhaps what once made headlines becomes embodied in ourselves and in our universe. The science that we once saw is no longer visible, yet no less integral in the ways in which it governs our world. Like the strings of a puppet, scientific principles guide us and coordinate the patterns and movements which shape our daily lives. Yet equally, science encourages us to look behind the curtain in order to unravel the forces which pull on the strings of our universe. Following these rich threads of knowledge, so often taken for granted, this issue brings to the fore and celebrates the science that keeps our world running. An introspective chat with the brain, a journey along the production line that creates our much-loved daily cup of matcha, fundamental questions about how we seek and create knowledge: Entwined seeks to make explanations explicit and start conversations about the scientific mechanisms embedded in our lives. When we take the time to focus our gaze, encourage awe at the everyday and seek reflection over reaction – that’s when we start to disentangle the science that binds us; that which keeps us Entwined . Begin your immersion in the world of Entwined with Issue 9’s Cover Illustrator, Anabelle Dewi Saraswati , as she explains the vision and rationale behind her work. “I found myself drawn to the world of Art Nouveau for these cover illustrations, captivated by the way forms seem to grow into each other, sharing meaning and life, much like the theme of ‘Entwined’ itself. There is something magical about that moment in history, where art, architecture, and science all seemed to bleed into one another, each discipline borrowing and lending, rooted in the emphasis on the beauty of nature after the coldness created by the Industrial Revolution. That sense of crossover felt like the perfect encapsulation for this issue, derived from pictorial history. The way feminine figures and flowing hair seem to melt into vines and leaves, everything tangled together in a quiet conversation. The motion and sense of growth, but also its hidden mathematical precision required to produce such beautiful curving forms. Art Nouveau captured how the artificial and natural worlds are always weaving into each other, inseparable. I wanted to draw from that imagery in a way that acknowledges its history I return to my architectural roots in structure, composition and line with my approach in building these pieces. The signage piece is fully hand-drawn and deliberate – reflecting the craft and typographic precision of the era. The collage is a layering of textures and fragments, letting ideas overlap and bleed into each other, much like memories and histories do. A way to begin the issue visually to trace the growth of worlds as they intertwine. Paying homage to the harmony between the natural and the human-made, to reflect on how we are shaped by the places we inhabit, the histories we inherit, and the stories we choose to keep alive.” Previous article Next article Entwined back to

< Back to Issue 9 Conferring with Consciousness by Ingrid Sefton 28 October 2025 Illustrated by Heather Sutherland Edited by Steph Liang Down the rabbit hole Indulge me for a moment, will you? I value your opinion. Your opinion, as in, one which has arisen from your mind. I would assume. It would seem unusual to consider that, perhaps, your thoughts are not your own. Stranger still to ponder the possibility that they did not arise from your mind. I digress – or maybe not. For it is this dilemma which I wish to pick your brain on. The mind. The brain. You. Are they one and the same; entwined? What do you think? Again, assuming it is you thinking. Assuming you feel certain enough to agree with this. Really, with what certainty can we say anything? You may be wondering who “I” am. I am but you, of course! I kid, but not entirely. Think of me as the brain; your brain if you wish. An excellent name I gave myself, if you ask me. Before we spiral any deeper into this chasm that is consciousness – because that is what this is about, is that not what this, life, is all about? – I must disclose a few things. One, I do not expect you to have answers to these questions I pose. Because two. We do not have answers. I apologise that I have not come bearing the answers to our existence, that I have not yet unpicked these questions of “who?”, “how?”, “why?”. I come offering an alternative. I wish to present to you these entangled threads of consciousness: of what we currently know, of what we hope to know and of where we can proceed from here. Then it’s back to you. You get to decide what you think (again, with the thinking). Maybe, for you and the workings of your inner mind, consciousness and all it entails will be revealed in full clarity. Maybe not. You certainly won’t know unless you try. A brief neural memoir Many a Nobel prize has been awarded for discoveries relating to the nervous system: from the morphology of neurons (Golgi and Cajal 1906) and their electrical signalling properties (Eccles, Hodgkin and Huxley 1963), to the nature of information processing in the visual system (Hubel and Wiesel 1981) (1). Despite some obvious gaps remaining in what is known about the brain (ahem, that slight issue of consciousness), the field of neuroscience has rapidly progressed over the last century. Gone are the days of thinking I was nothing more than a cooling mechanism for the blood, as Greek philosopher Aristotle once believed (2). How dismissive of my intellect! I assure you, I have far more important things to be doing. Generating the experience of “you”, as one small matter. The techniques developed to study the brain have also rapidly advanced. It was not until the invention of microscopes in the 19 th century that the neuron doctrine even came about . Pioneered by Santiago Ramón y Cajal, this is the (now) well-accepted concept that the nervous system is made up of discrete cells known as neurons, challenging older theories which proposed a continuous neural network (3). Today, neuroscientists have the ability to appreciate my anatomical and functional complexity at a huge range of temporal and spatial resolutions. Whole-brain connectivity can be studied using functional magnetic resonance imaging (fMRI), while the electrical activity of single neurons can be recorded using patch-clamp electrode technology. Not to mention optogenetics, chemogenetics, viral transduction: while the available experimental techniques are still unable to address all our brainy questions, the field of neuroscience has never been in a better position to get closer to answers. The potential of neurons Neurons: those special, excitable cells that make up the squishy entity I seem to be. The mechanisms of how neurons detect, generate and transmit signals have been described in utmost precision. When I talk of excitable cells, I am not referring to a bunch of cheerful, eager neurons. Excitability, in this context, refers to the fact that neurons can respond to a sensory stimulus by generating and propagating electrical signals, known as action potentials. Clearly, I am made up of slightly more than two neurons cheerfully signalling to each other back and forth. Try 86 billion, between the cortex and cerebellum combined (4). Yet, despite our deep understanding of neural signalling mechanisms, this has yet to reveal an explanation for consciousness. Individual neurons in isolation, it would appear, don’t hold the answers we want. In turn, a focus of neuroscience research has been on the wider “neuronal correlates of consciousness”, the minimal neuronal mechanisms that are sufficient to generate a conscious experience (5). This relates broadly to the generation of consciousness itself, but also to studying the neural underpinnings of specific conscious experiences. For example, which collective neural substrates support the process of visual object recognition. This is often a focus of fMRI studies, which examine brain activity in an attempt to pin-point where in the brain a particular cognitive function may be performed. Fancy techniques aside, some of the most fundamental insights into my regional specialisations have arisen from careful observation following selective lesions or damage to the brain. The critical, yet specific role of Broca’s area in speech production was discovered in 1861 by surgeon Paul Broca’s observations of his patient “Tan”. Tan had lost his ability to produce meaningful speech, yet was still able to comprehend speech; Broca identified a lesion in Tan’s left frontal lobe post-mortem, drawing the conclusion that this region is selectively involved in speech production (6). But what does all of this show us? Perhaps the only thing that neuroscientists can agree on, is that conscious experience is fundamentally, in some way, somehow, related to my activity: the brain. In turn, the activity of the brain is related to the activity of neurons; firing and signalling and transforming information. A lot is known about neurons. Less can be said about specific cognitive functions, yet we can see correlations between the regional brain activity and particular conscious experiences. Here lies my problem. The elephant in the room. How do we get from individual neurons to conscious experience? A map with no destination Enter “The Connectome” and the Human Connectome Project: a collective attempt to map the neuronal connections of the human brain, in an effort to connect structure to function (7). And in turn, for our purposes, to ideally connect this to consciousness. The rationale is that by modelling and trying to “build” a brain using a bottom-up approach, we may therefore understand the mechanisms of how cognitive functions arise. I’m sure it will come as no surprise that this isn’t the simplest of tasks. To measure, record and model billions of neurons and synapses requires techniques, time, and resources that are incredibly hard to come by in sufficient quantities. Excitingly, scientists have recently managed to successfully map a whole brain. That is, of a fly (8). With 3016 neurons and 548000 synapses, this was no simple feat. In case you had forgotten my own complexity, however, let me remind you of my 86 billion neurons, and estimated 1.5 x10 14 total synapses in the cortex alone (4). Progress has also been made on the human front, nonetheless. It was recently announced that a cubic millimetre of human temporal cortex has been completely reconstructed using electron microscopy, involving 1.4 petabytes of electron microscopy data (1000 Terabytes or one quadrillion bytes) (9). One cubic millimetre down, approximately a million to go. Putting practicalities aside, let us suppose we do, one day, manage to map and model an entire human brain, in all its intricacies. What now? What does one actually do with this data, and how would this allow us to better understand how consciousness arises? Up until now, we have been following the train of thought that consciousness, somehow, results from the activity of neurons, yet does not arise from the activity of individual neurons. This leads us to the notion that perhaps consciousness is due to the collective, computational activity of neurons working together – that with enough complexity, and enough information processing, together this will lead to the first-person experience of being “you”. Does this actually make sense? You tell me. Wishful thinking and conscious rocks The notion that, at a certain level of complex neuronal signal processing, a first-person perspective of “being you” (i.e. consciousness) arises is often termed “strong emergence” or “magical emergence” (10). With what we currently know about the properties of neurons, there is fundamentally no reason why this should happen. The “property” of consciousness, which cannot be predicted from the principles of how individual neurons function, seemingly just emerges. Consciousness, therefore, must somehow be greater than the sum of its parts, only emerging when neurons interact as a wider network. Maybe, the answer to this is merely that we don’t understand the mechanisms of neurons as well as we think we do. It could be that we have missed a fundamental property of how neurons operate and upon discovery of this, it would suddenly be completely explicable how consciousness arises. Or maybe, computation and neural signalling is not all there is to it. An alternative line of thinking is that rather than consciousness being a property that “arises”, it is a basic constituent of the universe that is missing from our current model of standard physics (11). That is, consciousness has been present all along and exists in everything. The philosophical view of ‘panpsychism’ embraces this idea to the extreme, proposing that everything within the universe is, to some degree, conscious (12). As in yes, that rock over there might just be conscious. Other theories suggest that consciousness only emerges in a recognisable form in certain conditions or at some critical threshold; myself and all my neurons apparently being one such example of the “right” conditions. Theories of consciousness don’t just stop at computation and fundamental properties of the universe. Quantum physics, microtubule computations, electromagnetic fields; all have been proposed as part of this web of “why” (13). While some theories arguably veer more towards pseudoscience than well-founded scholarship, they all make one thing clear. At this stage, just about every idea remains fair game in the quest for answers. Pondering hard, or hardly pondering? The question of consciousness is far from limited to the field of neuroscience. Philosophers too have long wracked their brains in an attempt to rationalise and unpick this problem. What unites the work of neuroscientists and philosophers alike, along with the many theories of consciousness, is that nothing provides a satisfactory explanation for why consciousness should emerge from the activity of neurons. Philosopher David Chalmers has termed this the “hard problem”. “Why should physical processing give rise to a rich inner life at all? It seems objectively unreasonable that it should, and yet it does” (14). If consciousness is simply the result of high-level processing and the computational activity of neurons, why would we even need to be conscious? If all the brain is doing is computation, and thus everything can be done via computation, there would appear to be no purpose in having a subjective experience of being “you”. Whichever side of consciousness we may be inclined to take, computational, fundamental, or otherwise, the fact remains. We cannot seem to move beyond mere description, to explanation. We have not solved the “hard problem”. A final conundrum, and a sole certainty Physicist Emerson M Pugh once made the somewhat sceptical remark that “if the human brain were so simple that we could understand it, we would be so simple that we couldn't.” (15) Is the reason that we have yet to understand consciousness simply, frustratingly, that we are not meant to? Logical conundrums aside, I rest my case. I hope I have given you some food for thought, or at the very least, not set off too dramatic an existential crisis. Somewhere between the neural wirings of the brain and the experience of consciousness lies an answer, regardless of whether we are destined to find it out. Make of this what you will. And if nothing else, let me try reassuring you once again with the wisdom of René Descartes. “ Cogito, ergo sum ” “ I think, therefore I am ” (16). If you are here, and you are thinking, you are conscious. You, my friend, are you. References Nobel Prizes in nerve signaling. Nobel Prize Outreach. September 16, 2009. Accessed October 18, 2025. https://www.nobelprize.org/prizes/themes/nobel-prizes-in-nerve-signaling-1906-2000/ . Rábano A. Aristotle’ s “mistake”: the structure and function of the brain in the treatises on biology. Neurosciences and History . 2018;6(4):138-43. Golgi C. The neuron doctrine - theory and facts . 1906. p. 190–217. https://www.nobelprize.org/uploads/2018/06/golgi-lecture.pdf Herculano-Houzel S. The human brain in numbers: a linearly scaled-up primate brain. Front Hum Neurosci . 2009;3:31. doi: 10.3389/neuro.09.031.2009 Koch C, Massimini M, Boly M, Tononi G. Neural correlates of consciousness: progress and problems. Nature Reviews Neuroscience . 2016;17(5):307-21. Broca area . Encyclopedia Britannica; 2025. Accessed October 18, 2025. https://www.britannica.com/science/Broca-area Elam JS, Glasser MF, Harms MP, Sotiropoulos SN, Andersson JLR, Burgess GC, et al. The Human Connectome Project: A retrospective. NeuroImage . 2021;244. doi: 10.1016/j.neuroimage.2021.118543 Winding M, Pedigo BD, Barnes CL, Patsolic HG, Park Y, Kazimiers T, et al. The connectome of an insect brain. Science . 2023;379(6636). doi: 10.1126/science.add9330 Shapson-Coe A, Januszewski M, Berger DR, Pope A, Wu Y, Blakely T, et al. A petavoxel fragment of human cerebral cortex reconstructed at nanoscale resolution. Science . 2024;384(6696). doi: 10.1126/science.adk4858 Chalmers D. Strong and Weak Emergence. In: Clayton P, Davies P. The Re-Emergence of Emergence: The Emergentist Hypothesis from Science to Religion . Oxford University Press; 2008. Kitchener PD, Hales CG. What Neuroscientists Think, and Don’t Think, About Consciousness. Frontiers in Human Neuroscience . 2022;16. doi: 10.3389/fnhum.2022.767612 Goff P, William Seager, and Sean Allen-Hermanson. Panpsychism . The Stanford Encyclopedia of Philosophy. Summer 2022. Seth AK, Bayne T. Theories of consciousness. Nature Reviews Neuroscience . 2022;23(7):439-52. doi: 10.1038/s41583-022-00587-4 Chalmers D. Facing up to the hard problem of consciousness . In: Shear J. Explaining Consciousness: The Hard Problem. MIT Press; 1997. Pugh GE. The Biological Origin of Human Values . Routledge & Kegan Paul; 1978. Descartes R. Principles of Philosophy . 1644. Previous article Next article Entwined back to

< Back to Issue 2 Law and Order: Medically Supervised Injecting Centres Keeping people safe from the harms of drug use is an important public health goal, but some question the value of medically supervised injecting centres in improving health and community outcomes. by Caitlin Kane 10 December 2021 Edited by Tanya Kovacevic & Natalie Cierpisz Illustrated by Rachel Ko Medically supervised injecting centres (MSICs) are an exemption from the standard practices of law and order: instead of policing drug users, these facilities allow people to bring illegal drugs to dedicated, clean settings where they can legally inject themselves and receive medical care if required. Essentially, drugs like heroin and ice can be used in a safer environment often integrated with other health and welfare services. These centres aim to improve public health and amenity outcomes, but are criticised for facilitating drug use. Australia’s MSICs have been controversial since their inception. The first local MSIC opened in Kings Cross, Sydney in 2001, following a Vatican intervention to withdraw nuns and the arrest of a Reverend for opening a short-lived unsanctioned injecting facility (1,2). Local businesses and residents feared a nearby “safe haven for drug users” would accelerate rampant and disruptive public drug use and threatened last-minute legal action (3). The centre is still in operation and has now supervised more than one million injections without a single overdose fatality (1,4). Medical director Dr Marianne Jauncey explained how the Kings Cross centre saves lives in a discussion with the ABC this year (5). Yet before Australia’s second MSIC opened in Richmond, Melbourne in 2018, commentators continued to decry the proposition as accepting and passively encouraging drug use. Nationals MP Emma Kealy announced, "It sends the wrong message to our kids and effectively says we've given up on preventing drug use” (6). With consultation ongoing to establish a third Australian MSIC in the Melbourne city centre, it’s valuable to detangle the misconceptions around the effects of MSICs on communities and their value as public health tools. Much controversy around Australia’s MSICs centres on three concerns: the number of overdoses occurring on premises, the attraction of drug addicts to the areas, and the drain on public health resources. Examining the data collected by public health scientists demonstrates that these concerns are unfounded and supports the continued consideration of MSICs as effective public health interventions. WHAT EFFECT DO MSICS HAVE ON OVERDOSES? It’s critical to understand that MSICs are proposed for areas with heavy drug use, particularly use in public settings and causing medical emergencies like overdoses. At the turn of the millennium, the streets of Kings Cross were a major site of public drug use, overdoses, and ambulance callouts (7). In 2000, one spate of thirty-five Sydney overdoses, four fatal, occurred in a single twenty-four hour period (3). At the time, 10% of all drug overdoses in Australia occurred in Kings Cross (3). In response, the Kings Cross MSIC opened in 2001 following decades of mounting evidence in Europe. European drug injection centres had been operating since the 1970s, with growing official support through the 1990s in countries like the Netherlands, Switzerland, and Germany (2). Evaluations reported successful reductions in public nuisance, improved service access, and declining overdose deaths (2). Switzerland demonstrated annual overdose deaths halved in four years and a tenfold reduced chance of hospital admission in MSIC overdoses compared to overdoses on the streets (2,3). Similarly, the Richmond MSIC opened in 2018 as a response to the highest heroin death toll in sixteen years and record ice deaths in 2016, with the major drug market in Richmond considered the “epicentre of Melbourne’s heroin crisis” (8). It could be easy to criticise the overdoses occurring on the MSIC premises, but these overdoses predated the MSICs and prompted their opening after other strategies failed to address the crisis. As public health interventions, MSICs are most effective in areas with high densities of public drug use, like Kings Cross and Richmond, which is why these sites were chosen to house MSICs (7). A systematic review of studies covering a range of MSIC facilities, including Kings Cross, concluded that all facilities had a significant reduction in overdose deaths in their local area (9). Ambulance callouts for overdoses near Kings Cross decreased by 68% within six years of opening (9). In Richmond, emergency medical attendances to drug overdoses near the MSIC have decreased significantly. Only 30 of the 2657 overdoses treated at the MSIC in its first eighteen months led to ambulance attendance and there has been a 25% decrease in naloxone administration, a treatment for opioid overdose, by ambulances in the one kilometre radius of the MSIC (10). The impact of drug overdoses in these areas has been greatly mediated by the presence of the MSICs. In 2017, the Kings Cross MSIC celebrated one million injections with zero fatal overdoses (1). The lack of a single overdose death at these facilities despite the number of overdoses should be considered a mark of commendation (1,5,10,11). DO MSICS ATTRACT DRUG USERS TO THE AREA? A second concern is that MSICs attract drug addicts to the area in which they are situated. However, this misattribution of causality arises because MSICs are purposefully located in areas with pre- existing drug markets. Major drug markets create local hotspots of public injection as many drug users inject immediately to reduce withdrawal and avoid police attention (7). These areas of high public drug use became candidates for the establishment of MSICs because drug users already frequented the area. Before the MSIC opened, over 90% of ambulances attendances for overdoses in Kings Cross were within a 300 metre radius of the proposed MSIC location. The area was chosen for an MSIC because of the existing disruption caused by public drug use and overdose. Improving public amenity, such as decreasing encounters with discarded needles, drug injection and overdose, is one of the most important goals of MSICs (2,11). Despite initial outrage in Kings Cross, support for the centre among local businesses increased to 70% in 2005, and local perceptions were positive (11,12). Monitoring of the area found no increase in drug-related crime, dealing or loitering after the Kings Cross MSIC opened (11). This is also supported by more recent findings in 2017, that alongside improving local amenity and reducing ambulance callouts, the Kings Cross MSIC did not draw dealers and addicts to the area in a ‘honey pot’ effect (6). This was corroborated by a systematic analysis which found no increase in drug-related violence and crime related to MSICs in Sydney and Vancouver across the results of four studies (9). The same review concluded that MSICs do not promote drug use, crime, drug trafficking, or increase new drug users (9). Likewise, demand for the Richmond MSIC was created by the existing Richmond drug market and disruption to the community, with 46 of 49 local stakeholders found to support a proposed MSIC in a 2017 consultation (11). Alongside harm minimisation, one submission highlighted the “significant toll on health workers and members of the local community who have to deal with the aftermath of overdoses and for children to see people in public in such a terrible state” as motivating their support for establishing a Richmond MSIC (11). Since opening, concern that additional people would travel to use the centre was abated by findings that travel distance was a major reason for not attending the MSIC and residential information collected from Richmond MSIC users (10). Regarding public amenity, an evaluation found mixed results in its eighteen months of operation, with reduced sightings of public injections and incidents at the neighbouring school, but decreased perception of safety and community support for the MSIC (10). It remains to be seen how this trend develops with continued operation of the centre. DO MSICS DRAIN PUBLIC HEALTH RESOURCES? While the primary goal of MSICs is to reduce the harms associated with overdose and public drug injection, MSICs have broader public impact through integration with complementary social and medical services. People who inject drugs are subject to associated harms, ranging from increased risks of blood-borne diseases (HIV, HBV, HCV) and psychiatric disorders to homelessness, crime, and prostitution (2,10). This socially marginalised group often lacks adequate access to healthcare, despite the significantly increased risks of harm and death (9). Analysis of the Vancouver MSIC found the streamlined and preventative healthcare provided to drug users was quantifiably more effective and saved both millions of dollars and 920 years of life over 10 years (9). In 2008, an economic review of the Kings Cross MSIC determined that averted health costs alone made significant savings for the government, and the value of prevented deaths would pay for operating costs more than 30 times (13). Furthermore, unprecedented access to drug users can facilitate important research to investigate and validate public health issues and strategies. For example, a 2017 paper analysed the rates and severity of overdoses for illicit and prescription opioids with data from the Sydney MSIC, producing clinically salient research enabled by access to marginalised and vulnerable populations (14). Alongside reductions in ambulance callouts and overdose complications which are instead managed at the centre, MSICs can improve the reach and delivery of health and social services for drug users, including blood-borne disease screening, drug treatment and rehabilitation, and mental health counselling (9,10). Engagement with MSICs and integrated services promoted safer injecting practices, health and social service use, and entry to treatment programs. The overall proportion of MSIC-attending drug users in treatment programs was 93%, compared to 61% of first-time attendees at the facility, demonstrating the improved effectiveness of reaching drug users with healthcare programs (15). Across seven studies on drug user uptake of MSICs, 75% of drug users reported improvements in their behaviours regarding public amenity and safe injection (9). This effect was particularly strong for marginalised and at-risk attendees, like those who were homeless, Indigenous, had previously overdosed, and others with self-identified need (15). MSICs contribute massively to overall public health strategy, through both direct harm reduction and efficiently increasing access to existing services. BEYOND MEDICALLY SUPERVISED INJECTING CENTRES MSICs in Australia and across the world have been successful in achieving their objectives; reducing drug-associated harms and community exposure to public injection and overdose (9,12). The continued controversy around MSICs despite their established and validated success betrays widespread misunderstanding around the nature of addiction, the effective treatment and harm reduction for drug abuse. In 2017, despite the support of three coronial recommendations and the Australian Medical Association for a Richmond MSIC, MP Tim Smith asked, “Since when did we start rewarding people who break the law, since when did drug users become victims, we need to enforce the law" (6,8). Political discourse that distorts the goals of MSICs and distracts from their established efficacy only serves to stagnate evidence-based action and weaken Australia’s response to damaging drug use. While MSICs attract stagnating attention and controversy, public health issues around drug addiction and opioid dependency remain unaddressed (16). In Australia, prescription drug abuse causes ten times more overdose deaths than illicit drug abuse, and prescription opioids provides a pathway to the use of illegal opioids, like heroin and fentanyl (14,16). As seen in the 2017 investigation into the prevalence and consequences of opioid overdoses in the Kings Cross MSIC, prescription opioid injection is a significant form of harmful drug use (14). MSICs are a useful and effective tool to combat drug abuse, but are not intended to solve all drug-pertinent problems; they must be incorporated into broader public health and crime strategies (9). Drug abuse is a seriously complicated problem, so it makes sense to have misconceptions around the impacts of MSICs. Effective drug policy needs to consider MSICs as a component of a broader public health strategy and educate the public about responses to drug abuse. It’s critical for communities and decision-makers to stay informed and choose evidence-based strategies to address the public health and amenity goals around drug use. References: Alcohol and Drug Foundation. ‘Medically Supervised Injecting Centres - Alcohol and Drug Foundation’. Accessed 1 December 2021. https://adf.org.au/insights/medically-supervised-injecting-centres/. Dolan, Kate, Jo Kimber, Craig Fry, John Fitzgerald, David McDonald, and Franz Trautmann. ‘Drug Consumption Facilities in Europe and the Establishment of Supervised Injecting Centres in Australia’. Drug and Alcohol Review 19, no. 3 (2000): 337–46. https://doi.org/10.1080/713659379. Barkham, Patrick. ‘Sydney Gets Safe Haven for Drug Users’. The Guardian, 4 September 2000, sec. World news. https://www.theguardian.com/world/2000/sep/04/patrickbarkham. ‘20th Anniversary of Sydney’s Medically Supervised Injecting Centre’. Accessed 9 December 2021. https://www.uniting.org/blog-newsroom/newsroom/news-releases/20th-anniversary-of-sydney-s-medically-supervised-injecting-cent. The Kings Cross Supervised Injecting Facility Marks Its 20th Anniversary. ABC News, 2021. https://www.abc.net.au/news/2021-05-06/united-medically-supervised-injecting-centre-20th-anniversary/13332878. Carey, Adam. ‘“People Are Dying”: Trial of Safe Injecting Room Blocked by Andrews Government’. The Age, 7 September 2017. https://www.theage.com.au/national/victoria/people-are-dying-trial-of-safe-injecting-room-blocked-by-andrews-government-20170907-gycmiu.html. Uniting. ‘History of the Uniting Medically Supervised Injecting Centre’. Accessed 9 December 2021. https://www.uniting.org/community-impact/uniting-medically-supervised-injecting-centre--msic/history-of-uniting-msic. Willingham, Richard. ‘Renewed Calls for Safe Injecting Room as Victoria’s Heroin Death Toll Reaches 16-Year High.’ ABC News, 27 October 2017. https://www.abc.net.au/news/2017-10-27/spike-in-heroin-deaths-in-victoria-safe-injecting-rooms/9092660. Potier, Chloé, Vincent Laprévote, Françoise Dubois-Arber, Olivier Cottencin, and Benjamin Rolland. ‘Supervised Injection Services: What Has Been Demonstrated? A Systematic Literature Review’. Drug and Alcohol Dependence 145 (1 December 2014): 48–68. https://doi.org/10.1016/j.drugalcdep.2014.10.012. Department of Health. Victoria, Australia. ‘Medically Supervised Injecting Room Trial - Review Panel Full Report’. State Government of Victoria, Australia, 25 June 2020. http://www.health.vic.gov.au/publications/medically-supervised-injecting-room-trial-review-panel-full-report. Victoria, Parliament, Legislative Council, and Legal and Social Issues Committee. Inquiry into the Drugs, Poisons and Controlled Substances Amendment (Pilot Medically Supervised Injecting Centre) Bill 2017. East Melbourne, Vic: Victorian Government Printer, 2017. Salmon, Allison M., Hla-Hla Thein, Jo Kimber, John M. Kaldor, and Lisa Maher. ‘Five Years on: What Are the Community Perceptions of Drug-Related Public Amenity Following the Establishment of the Sydney Medically Supervised Injecting Centre?’ International Journal of Drug Policy 18, no. 1 (1 January 2007): 46–53. https://doi.org/10.1016/j.drugpo.2006.11.010. SAHA. ‘NSW Health Economic Evaluation of the Medically Supervised Injection Centre at Kings Cross (MSIC)’, August 2008. https://www.uniting.org/content/dam/uniting/documents/community-impact/uniting-msic/MSIC-Final-Report-26-9-08-Saha.pdf. Roxburgh, Amanda, Shane Darke, Allison M. Salmon, Timothy Dobbins, and Marianne Jauncey. ‘Frequency and Severity of Non-Fatal Opioid Overdoses among Clients Attending the Sydney Medically Supervised Injecting Centre’. Drug and Alcohol Dependence 176 (1 July 2017): 126–32. https://doi.org/10.1016/j.drugalcdep.2017.02.027. Belackova, Vendula, Edmund Silins, Allison M. Salmon, Marianne Jauncey, and Carolyn A. Day. ‘“Beyond Safer Injecting”—Health and Social Needs and Acceptance of Support among Clients of a Supervised Injecting Facility’. International Journal of Environmental Research and Public Health 16, no. 11 (January 2019): 2032. https://doi.org/10.3390/ijerph16112032. Fitzgerald, Bridget. ‘Drug Overdoses Killed More than 2,000 Australians for the Fifth Consecutive Year, Report Finds’. ABC News, 31 August 2020. https://www.abc.net.au/news/2020-08-31/more-than-2000-australians-lost-their-lives-due-to-overdose-2018/12612058. Previous article back to DISORDER Next article

< Back to Issue 6 A Brief History of the Elements: Finding a Seat at the Periodic Table by Xenophon Papas 28 May 2024 Edited by Arwen Nguyen-Ngo Illustrated by Rachel Ko What are we made of and where did it all come from? Such questions have pervaded the minds of scientific thinkers since ancient times and have entered all fields of enquiry, from the physical to the philosophical. Our best scientific theory today asserts that we’re made of atoms, and these atoms come in different shapes and sizes. Fundamentally, they can be described by the number of subatomic particles (protons, neutrons, and electrons) they contain (Jefferson Lab, 2012). Neatly arranged in a grid, these different elements form the periodic table we know and love today; but it was not always this way. The story of how the periodic table of elements came to be harks back to Ancient Greece and winds its way through the enlightenment into the 20th century. It is an unfinished story of which we are at the frontier of today: in search of dark matter and the ultimate answer to what the universe is made of. We may never know for sure exactly what everything in existence consists of, but it’s a pursuit our earliest ancestors would be proud to see us follow. Thales was first in the ancient Greek-speaking world to postulate about the origins of all material things. He theorised that all matter in the universe was made up of just one type of substance – water – and any other forms of solids, liquids and gases were just derivatives thereof. This idea was not initially opposed, given Thales was one of the earliest of the Ancient Greeks to pursue such questions of a scientific nature. Afterall, he’s remembered today as the “Father of Science” in the Western world. As Thales was from Miletus, a city on the coast of the Ionian Sea in modern day Türkiye and part of Magna Graecia in the 6th cent BC, it is not hard to imagine that water was a crucial aspect in trade, agriculture, and daily life at the time. However, this seemed to oversimplify the matter to some of his contemporaries. Empedocles, who was considered more a magician than a philosopher, revised this mono-elemental theorisation in the 5th Century BC. He proposed four basic substances from which all others were made (Mee, 2020). We know them today famously as the four classical elements: Earth, Air, Water and Fire. This asserted a fundamental principle of “fourness”, encompassing the cardinal directions in the Western world during this time. Interestingly, concurrent to this other traditions such as those in China acknowledged five elements and compass points instead. A generation later to Empedocles’ work, Plato embraced his “fourish” formulation. Being heavily influenced by mathematics as the medium through which we make reason of the natural world, Plato related each of these elements to a mathematical object: a convex, regular polyhedron in three-dimensional Euclidean space, otherwise known as a Platonic solid. Earth was associated with the cube, air with the octahedron, water with the icosahedron, and fire with the tetrahedron. Lastly, the most complicated solid, the dodecahedron – itself made up of composite regular polygons – was associated with the makeup of the constellations and the Heavens themselves, their workings said to be unfathomable by human minds (Ball, 2004). His student, Aristotle, ran with this idea and devised a clever way to break up the elements based on their "qualities”, akin to a first periodic table. These binary roles were hot and cold, wet and dry, with an element containing just two of these qualities each. According to Aristotle, each of these elements could be converted to the other by inverting one of their qualities, seemingly bringing about an early form of alchemy. To these four elements, he also appended a fifth - aether or “pure air” - to fill the expanses of the heavens, which also became associated with the fifth Platonic solid. In the Western World, Aristotle’s word was taken as doctrine for a very long time owing greatly to the fall of Rome and the cultural instability thereafter. Where Europe plummeted into the Dark Ages with a reverence for the scholars of antiquity, scientific and literary endeavour flourished in the Middle East – the word alchemy itself having etymologically Arabic roots. It was not until the late 17th century that the likes of Galileo, Newton, and Descartes revived Western scientific pursuit, and sought to understand how the natural world arranged itself. In the 18th century, new discoveries were being made on the frontiers of science in major cities throughout Europe. In 1772, in Paris, Antoine Lavoisier began work on combustion of materials like phosphorus and sulphur. Lavoisier concluded that if something decomposes into simpler substances, then it is not an element. For example, while water can be turned into a gas when passed over hot iron and is therefore not an element, oxygen and hydrogen are indeed elemental. English chemist John Dalton took after Lavoisier and in 1808 began to arrange elements spatially into a chart, accounting for their various properties. In Strasbourg 1827, Wolfgang Döbereiner recognised that groups of threes arose from the list of elements which behaved similarly, known as “Döbereiner's triads" (Free Animated Education, 2023). John Newlands in 1866 put forward the “Law of Octaves”. Elements with similar properties ended up at regular intervals, dividing the elements into seven groups of eight – hence octaves. However, this method of dividing up the elements broke down in some special cases. Now turning to St. Petersburg, Russia, in February of 1869. Dmitri Mendeleev sits at his desk, with a mess of cards covering the surface of his working space. The professor of chemistry rearranges these elemental cards like a jigsaw puzzle, arranging and rearranging them to align them in accordance with their properties. Supposedly after coming to him in a dream, a pattern emerged. Mendeleev saw the ability for the simple tabulation of the elements based on their atomic number and hence their common properties. This newfound tool, based on Lavoisier’s work a century prior, allowed for the prediction of properties of elements which had not even been discovered yet. Elements which Mendeleev believed to exist, even though they presented as empty gaps in the grid structure of the periodic table. Within just twenty years, Mendeleev’s prediction of the existence of such elements like gallium, scandium, and germanium had been validated with experimental fact. All of this was predicted without knowledge of the true reason for similarities of elemental properties – the electron shell arrangement at a subatomic level. Mendeleev had totally changed the way chemists viewed their discipline and has been immortalised for perhaps the greatest breakthrough work in the history of chemistry (Rouvray, 2019). Today we recognise that all the elements in the universe have origins in the high-pressure hearts of stars. Like a hot furnace, they churn out heavier and heavier elements under their immense internal pressures. Once this life cycle comes to an end, the star erupts into a fiery supernova, releasing even more of the heavier elements we see further down the periodic table. In the last 75 years, scientists have added an additional 24 elements to the periodic table, some of which are so difficult to produce that their half-lives last only a few fractions of a millisecond before decaying away to nothing (Charley, 2012). This begs the question; how do we find new elements? Elements can be created via either fission, splitting apart a heavier atom, or fusion, binding two bodies of atoms together. The heavier an element, that is, the more protons and neutrons in its nucleus, the more unstable it is. Hence it is with great difficulty that scientists attempt to churn out new elements from large particle accelerators, by colliding and combining elements into new ones (Chheda, 2023). The story of physical matter is just one aspect in the search for what “everything” is made of. Dark matter and dark energy – so named because they do not interact with light – have been found to drive the expansion of the universe and the rotation speeds of galaxies. We know remarkably little about these substances, given that they make up around 95% of the total mass of the universe! Without a doubt, we have only just begun the journey to find out what makes up the universe around us. References Chheda, R. (2023, March 31). Can we add new elements to the periodic table? Science ABC. https://www.scienceabc.com/pure-sciences/can-we-add-new-elements-to-the-periodic-table.html Charley, S. (2012). How to make an element. PBS. https://www.pbs.org/wgbh/nova/insidenova/2012/01/how-to-make-an-element.html Free Animated Education. (2023, February 10). Perfecting the periodic table [Video]. YouTube. https://www.youtube.com/watch?v=7tbMGKGgCRA&ab_channel=FreeAnimatedEducation Jefferson Lab. (2012, November 20). The origin of the elements [Video]. YouTube. Ball, P. (2004). The elements: A very short introduction . Oxford University Press. Mee, N. (2020). Earth, air, fire, and water. In Oxford University Press eBooks (pp. 16–23). https://doi.org/10.1093/oso/9780198851950.003.0003 Rouvray, D. (2019). Dmitri Mendeleev. New Scientist. https://www.newscientist.com/people/dmitri-mendeleev Previous article Next article Elemental back to

< Back to Issue 4 Big Bang To Black Holes: Probing the Illusionary Nature of Time by Mahsa Nabizada 1 July 2023 Edited by Elijah McEvoy and Caitlin Kane Illustrated by Aisyah Mohammad Sulhanuddin Time is ubiquitous: it governs our daily lives, marking our existence from birth to death. We measure time in seconds, minutes, hours, days or years, using man-made tools like clocks and calendars which reinforce the perception that it is tangible and objective. In fact, the most used noun in English is time (1). However, delving into the realms of science and philosophy, the true nature of time becomes illusionary. We can acknowledge our personal perception of time is inherently subjective. Our experiences of time vary depending on our surroundings, emotional state and physical state. For example, while time may seem to drag on when we're bored or anxious, it can pass quickly when we're having a good time. Although we imagine time to be objective, it could be merely an illusion resulting from the limitations of our perceptions and the conditions of our observation. Exploring these questions requires scientific perspectives, so let's delve into the enigmatic physics of time. In three-dimensional space, physical spaces are fixed, meaning that we can revisit the same location repeatedly. For example, we may visit our favourite restaurant as many times as we wish. However, this is not the case with time. Time only moves forward, and we cannot go back to a previous moment; it belongs to the past and cannot be retrieved (2). This unidirectional nature of time is referred to as the arrow of time. Time is believed to originate from the Big Bang, the event that marked the beginning of the universe (3). From that point, time has progressed towards the present, where you are currently reading this article, and it continues to move into the future. The second law of thermodynamics, known as entropy, plays a crucial role in representing the forward movement of this arrow of time (4). Entropy refers to the state of disorder, uncertainty, or randomness in a system like a measure of the disorder present in the universe. At the moment of the Big Bang, the universe had low entropy, with matter and energy concentrated and organised. However, since that initial state, matter in the universe has been expanding and moving away from each other, leading to an increase in entropy and transforming the universe into a high entropy system. The concepts of the arrow of time and entropy, guided by the second law of thermodynamics, allow for a distinction between the past and the future and play a pivotal role in the existence of life. Without entropy and the resulting change there would be no discernible difference between events that occurred 1000 years ago and events happening in the present. Furthermore, the progression of life from birth to death can be explained through the phenomenon of entropy, as governed by the second law. However, on the quantum level, the behaviour of particles becomes more complex. Just as there is no inherent forward or backward direction in vast space, at the molecular level, the concept of entropy is not as apparent. While time appears to have a clear direction on the macroscopic level, when observing the particles that make up the universe, time can flow and operate in multiple directions. The laws of physics that govern these particles do not distinguish between the past and the future. They describe the behaviours of physical systems without differentiating between temporal directions. The theory of general relativity, proposed by Albert Einstein, provides a fundamental framework for understanding the workings of spacetime (5). According to the theory of general relativity, the presence of mass or energy causes a distortion in the fabric of spacetime, which in turn affects the motion of other objects. For example, it describes gravity as the curvature of spacetime caused by the presence of mass and energy. Essentially, spacetime can be thought of as a fluid that is influenced by both gravity and velocity. This theory has illuminated not just the behaviour of celestial bodies and the vast structure of the universe, but also enhanced our understanding of the intricate interplay between space, time, and matter. Within Einstein’s theories, time dilation is a scientific phenomenon that can be explored through a thought experiment known as the twin paradox (6). It demonstrates how the perception of time can vary between two individuals who experience different levels of motion or gravitational forces. Time dilation is not limited to the twin paradox or space travel; it is a fundamental concept in understanding the relationship between time, motion, and gravity. It has been experimentally confirmed and plays a significant role in our understanding of the universe. Imagine you, Twin A, are stationary on Earth while your sister, Twin B, is traveling in a rocket at a constant speed. Due to the sideways motion of the rocket, Twin B’s clock will appear slower to Twin A since her path through spacetime is longer due to the effects of special relativity and time dilation. Therefore, from Twin A’s perspective on Earth, time seems to pass slower on the moving rocket. However, from Twin B’s perspective, Twin A is the one in motion and therefore Twin A’s clock appears slower to her. Both frames of reference seem to indicate that the other's clock is slower, which seems contradictory. In reality, both observations are correct because the laws of physics remain the same in both frames of reference. Now, the question arises: who is actually younger? According to each twin's viewpoint, the other twin is younger. However, in reality, only one twin can have aged less than the other. Fortunately, there is a resolution to this paradox. When Twin B turns around to return to Earth, she undergoes acceleration which means the usual laws no longer apply. As a result, Twin B will be younger than her Earth-bound sister, Twin A, upon returning to Earth due to the effects of acceleration. To explain this effect during the period of acceleration, we need to consider that general relativity causes time dilation in the presence of gravitational fields. Gravitational time dilation means that clocks run slower in stronger gravitational fields compared to clocks in weaker gravitational fields. During the acceleration phase, when Twin B’s rocket is returning to Earth, her time now appears to go slower, while the clock on Earth appears to run faster. This phenomenon is similar to the extreme time dilation experienced near the edge of a black hole, known as an event horizon (7). From the observer’s frame of reference outside the black hole, time slows as an object approaches the event horizon, until it appears time has stopped. Hence an object falling into the black hole would appear to have stopped, completely frozen. Even though it governs our daily lives and despite our ability to measure it with great accuracy, there is no definitive answer to what time truly is. From the subjective experiences of our daily lives to the enigmatic physics of the Big Bang and black holes, the illusionary nature of time unveils an array of complexities, reminding us that this fundamental concept remains one of the most captivating mysteries of our existence. As famously stated by Einstein: "For us believing physicists, the distinction between past, present, and future is only a stubbornly persistent illusion” (8). References Study: “Time” Is Most Often Used Noun [Internet]. www.cbsnews.com . 2006. Available from: https://www.cbsnews.com/news/study-time-is-most-often-used-noun/ Davies P. The arrow of time. Royal Astronomical Society [Internet]. 2005 Feb 1 [cited 2023 Jun 4];46(1):1.26–9. Available from: https://academic.oup.com/astrogeo/article/46/1/1.26/253257 University of Western Australia. Evidence for the Big Bang [Internet]. Evidence for the Big Bang. 2014 p. 1–4. Available from: https://www.uwa.edu.au/study/-/media/Faculties/Science/Docs/Evidence-for-the-Big-Bang.pdf Hall N. Second Law - Entropy [Internet]. Glenn Research Center | NASA. 2023. Available from: https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/second-law-entropy/ Norton JD. General Relativity [Internet]. sites.pitt.edu . 2001 [cited 2022 Feb]. Available from: https://sites.pitt.edu/~jdnorton/teaching/HPS_0410/chapters/general_relativity/ Perkowitz S. Twin paradox | physics | Britannica. In: Encyclopædia Britannica [Internet]. 2020 [cited 2013 Jun 14]. Available from: https://www.britannica.com/science/twin-paradox Hadi H, Atazadeh K, Darabi F. Quantum time dilation in the near-horizon region of a black hole. Physics Letters B [Internet]. 2022 Nov 10 [cited 2023 Jun 11];834:137471. Available from: https://www.sciencedirect.com/science/article/pii/S0370269322006050 A Debate Over the Physics of Time | Quanta Magazine [Internet]. Quanta Magazine. 2016. Available from: https://www.quantamagazine.org/a-debate-over-the-physics-of-time-20160719/ Previous article Next article back to MIRAGE

Humans of UniMelb Research - Is it For Me? By Renee Papaluca Thinking about completing your Honours year or a PhD at UniMelb? This column has some advice for you, courtesy of current research students. Edited by Ruby Dempsey & Sam Williams Issue 1: September 24, 2021 Illustration by Gemma Van der Hurk Science is everywhere, but how can we contribute to furthering our knowledge of science? I caught up with some current research students to learn more about the Honours-PhD pathway and their experience studying science at the University of Melbourne. Caitlin Kane Caitlin is a current Honours student at the Royal Melbourne Hospital. In her spare time, she likes to go on bike rides and read. What was the ‘lightbulb moment’ that prompted you to study science? “When I was five, I had all these books that covered basic topics like the human body and the ocean. I thought they were wild! I was just a really curious kid that loved learning things and being certain about things. For me, science was an approach to learning and understanding the world that [was] very investigative. I guess I was just curious about a lot of things and science just took that curiosity and said, ‘now you can do anything with it’". Why did you choose to study Honours? “Honours, at least for me, is a clarifying year.” “Doing a bachelor’s degree in science doesn’t [necessarily] make you a scientist … A lot of the skills you need as a scientist are practical ones; depending on your area [of study] ... Those skills are very different from what you actually learn in university.” “I wasn’t sure what I wanted to do with my degree as there are a lot of options, like doing a PhD or ... going into the workforce… I thought that Honours would really help me clarify what kinds of science I like and give me time to figure out what I wanted to do next.” What’s involved in your research? “There are many variants of HPV (human papillomavirus) circulating in Australia - some of those variants cause cancer, and some are covered by vaccination. To understand how well vaccination is working in Australia, I test for HPV in patient samples, note the patient’s vaccination status, and examine the data to see which HPV variants are prevalent right now. This involves lab skills like pipetting, running polymerase chain reactions (PCRs) and extracting DNA. When I say ‘I’ do all these steps, it’s really like 10 people ... There are a lot of different people who do different parts of the project to keep it running.” What advice would you give to prospective Honours students? “Be informed of your options, don’t be scared of talking to supervisors, and talk to older students. Everytime I would ask an older student … [’what do you wish you would have known?’] they would come out with killer advice. That’s the only trick!” “The best piece of advice I got was that ‘some supervisors only want an extra set of hands’… They just want the work to be done and that is not the kind of supervisor you want.” Alex Ritter Alex is currently completing his 2nd PhD year in the Department of Physics. In his spare time, he enjoys singing in choirs, doing crosswords, and doting over his housemate’s cat. What was the ‘lightbulb moment’ that prompted you to study science? “Going through school, there are always those things you [tend to] gravitate towards...I really liked maths and science... and wanted to do something to do with them. In high school, I also had some opportunities to do extension physics… [which] really got me interested [in tertiary study]... Luckily, it's still something I enjoy so it was the right choice.” Why did you choose to continue to a PhD following your Masters? “I did Masters of Science in Physics straight after undergrad. I really enjoyed it! I loved … really getting into the graduate subjects; diving into more detail” “[The thing] I found the most challenging was the transition into research and that whole different style of thinking. My experience was that your first year is still coursework and learning high level topics and your second year is largely research. So, I found in second year - especially towards the end - finishing the thesis was quite challenging but ultimately rewarding” What are you currently researching? “My general area of research is theoretical particle physics. This describes the tiny, subatomic particles that make us up. So, we look at electrons, inside neutrons and all the forces that hold them together. I work in dark matter ... It doesn’t give off light but it interacts gravitationally. My research generally is introducing new sub-atomic particles and forces to try and explain what dark matter might be.” Can you have a life outside of your PhD? “The thing with a PhD and research, especially in physics, is that you set your own schedule which has its pros and cons. During the pandemic, I found it difficult to keep myself motivated whilst being stuck inside all day. Due to the flexibility, it really depends on how you want to approach your PhD. I still wanted to have a life outside of my PhD. I don’t wake up and think about my PhD 24/7! I still do a fair bit of choral singing as a hobby.” “My advice is that you can balance things in a PhD but it comes down to what your personality is like and how well you can set boundaries. For example, are you someone who gets absolutely absorbed in tasks and spends hours on them? Do you overwork yourself or do you underwork yourself? How good are you at time management? I think the best thing to do is to be self-aware about how you are as a worker and researcher before you get started.” What advice would you give to prospective Masters or PhD students? “Be honest with yourself and be honest with your supervisor. Know who you are and know what your limits are and try to build everything around that.” “I think the hardest part for me was knowing what to do at the start of the process. There isn’t a lot of information [available]... In terms of picking a supervisor, I think the best advice is to try and chat to them as honestly as you can about the things they do and what kinds of students they like.. For example, try and see how busy your supervisor is. Sometimes, a supervisor can be great, their research is great and can be super interesting... But, often they’ll be in high demand with very little time … to be a hands-on supervisor. I think also trying to get an understanding of what the working relationship will be like is also important.”

< Back to Issue 7 Soaring Heights: An Ode to the Airliner by Aisyah Mohammad Sulhanuddin 22 October 2024 edited by Lauren Zhang illustrated by Esme MacGillivray A smile at your neighbour-to-be, a quick check and an awkward squeeze as you sidle into your seat: 18A. Window seat, a coveted treasure! A clatter . Whoops! As you fumble for your dropped phone, your feet–which jut out ungracefully onto the aisle, end up as a speed bump for the wheels of someone’s carry-on. Yeowch! It isn’t without more jostling that everyone finally settles into their seats, and with a scan at the window, the tarmac outside is looking busy. Hmm. It makes sense–this flight is just one of the 36.8 million trips around the world flown over the past year (International Air Transport Association, 2024). Commercial aviation has clocked many miles since its first official iteration in 1914: a 27-km long “airboat” route established around Tampa Bay, Florida (National Air and Space Museum, 2022). Proving successful, it catalysed an industry and led to the establishment of carriers like Qantas, and the Netherlands’ KLM. Mechanics of Ascent (and Staying Afloat) As said Qantas plane pulls up in the window view, its tail dipped red with the roo taxies ahead of you on the tarmac. Your plane is now at the front of the runway queue and the engines begin to roar. You’re thrusted backwards as gravity moulds you to your seat. For a split second, as you look out the window, you can’t help but wonder– how on earth did you even get up here? How is this heavy, huge plane not falling out of the sky? The ability for a plane to stay afloat lies in its wings, which allow the plane to fly. The wings enable this through generating lift (NASA, 2022). Lift is described as one of the forces acting on an object like a plane, countering weight under gravity which is the force acting in the opposite direction, according to Newton’s Third Law ( figure 1a ). A plane's wings are constructed in a curved ‘airfoil’ shape with optimal aerodynamic properties: as pressure decreases above the wing with deflected oncoming air pushed up, the velocity increases, as per Bernoulli’s principle. This increases the difference in pressure above and below the wing, which remains high, generating a lift force that pushes the plane upwards (NASA, 2022) ( figure 1b ). Figure 1a. Forces that act on a plane . Note. From Four Forces on an Airplane by Glenn Research Centre. NASA, 2022 . https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/four-forces-on-an-airplane/ . Copyright 2022 NASA. Figure 1b. An airfoil, with geometric properties suitable for generating lift. Note. From Four Forces of Flight by Let’s Talk Science. Let’s Talk Science, 2024. https://letstalkscience.ca/educational-resources/backgrounders/four-forces-flight . Copyright 2021 Let’s Talk Science. Looking laterally, the thrust of a plane’s engines counters the horizontal drag force that airfoils minimise, all whilst maximising lift. Advancements in plane design over the mid-20th century focused on optimising this ‘Lift to Drag ratio’ for greater efficiency, a priority stemming from the austere, military landscape of World War II (National Air and Space Museum, 2022). Influenced by warplane manufacturing trends, the commercial sphere saw a transition from wooden to durable aluminium frames. In conjunction with this, double-wing biplanes were superseded by single-wing monoplanes ( figure 2a, b ), which had a safer configuration that reduced airflow interference whilst maximising speed and stability (Chatfield, 1928). Figure 2a. A biplane, the De Havilland DH-82A Tiger Moth. Note. From DH-82A Tiger Moth [photograph] by Temora Aviation Museum. Temora Aviation Museum, 2017 . https://aviationmuseum.com.au/dh-82a-tiger-moth/ . Copyright 2024 Temora Aviation Museum. Figure 2b. A monoplane, an Airbus A310. Note. From Airbus A310-221, Swissair AN0521293 [photograph] by Aragão, P, 1995. Wikimedia Commons . https://commons.wikimedia.org/wiki/File:Airbus_A310-221,_Swissair_AN0521293.jpg CC BY-SA 3.0. Taking a Breather Without really noticing it, you’re somewhat upright again. Employing head shakes and gulps to make your own ears pop, you can also hear the babies bawling in discomfort a few aisles back. Blocked ears are our body’s response to atmospheric pressure changes that occur faster than our ears can adjust to (Bhattacharya et al., 2019). Atmospheric pressure describes the weight of air in the atmosphere above a given region of the Earth’s surface (NOAA, 2023), which decreases with altitude. Our bodies are suited to pressure conditions at sea level, allowing sufficient intake of oxygen through saturated haemoglobin within the bloodstream. Subsequently, the average human body can maintain this intake until 10000 ft (around 3000 m) in the air, with altitudes exceeding this likely to result in hypoxia and impairment (Bagshaw & Illig, 2018). Such limits have had implications for commercial flying. Trips in the early era were capped at low altitudes and proved highly uncomfortable: passengers were exposed to chilly winds, roaring engines, and thinner air, and pilots were forced to navigate around geographical obstacles like mountain ranges and low-lying weather irregularities. However, this changed in 1938 when Boeing unveiled the 307 Stratoliner, which featured pressurised cabins. Since then, air travel above breathing limits became possible, morphing into the high-altitude trips taken today (National Air and Space Museum, 2022). Via a process still relevant to us today, excess clean air left untouched by jet engines in combustion is diverted away, cooled, and pumped into the cabin (Filburn, 2019). Carried out in incremental adjustments during ascent and descent, the pressure controller regulates air inflow based on the cockpit’s readings of cruising altitude. Mass computerisation in the late 20th century enabled precise real-time readings, allowing safety features like sensitive pressure release valves, sensor-triggered oxygen mask deployment, or manual depressurisation. However, the sky does indeed dictate the limits, as pressure conditions are simulated at slightly higher altitudes than sea level to avoid fuselage strain (Filburn, 2019). This minor pressure discrepancy plays a part in why we feel weary and tired whilst flying–our cells are working at an oxygen deficit for the duration of the flight. Your yawn just about now proves this point. Time for your first snooze of many… Food, Glorious Food A groggy couple of hours later and it’s either lunch time or dinner, your head isn’t too sure. You wait with bated breath, anticipating the arrival of the flight attendant wheeling the bulky cart through the narrow aisle... Only to be met with a chicken sausage that vaguely tastes like chicken, with vaguely-mashed potato and a vaguely-limp salad on the side. Oh, and don’t forget the searing sweetness of the jelly cup! You’re far from alone in your lukewarm reception of your lunch-dinner. Aeroplane food remains notorious amongst travellers for its supposedly flat taste. Whilst airlines like Thai Airways and Air France have employed Michelin-star chefs to translate an assortment of gourmet cultural dishes to tray table fare (De Syon, 2008; Thai Airways, 2018), the common culprit responsible for the less-than-appetising experience remains – being on a plane. As Spence (2017) details, multiple factors play into how you rate your inflight dinner, many relating to the effects of air travel on our bodies. The ‘above sea level’ air pressure within the plane coincides with higher thresholds for detecting bitterness at 5000-10000 ft (around 1500-3000m), heightening our sensitivity to the tart undertones of everyday foods. Dry pressurised air that cycles through the cabin is about as humid as desert environments, which hampers our smell perception and thus taste. Less intuitively, the loud ambient noise of the plane’s engines also appears to hinder olfactory perception, though the reason as to why remains unclear. Nevertheless, alleviating the grumbling passenger and stomach is an area of interest with a few successful forays. One angle of approach involves food enhancement. Incorporating sensory and textural elements into meals such as chillies and the occasional crunch or crackle can compensate for impaired perception. Interestingly, umami has been observed as the least affected taste sense mid-air (Spence, 2017), inspiring British Airways’ intense and aromatic umami-rich menus – though with the unwitting drawback of threatening to stink up the plane on multiple occasions (Moskvitch, 2015). Meanwhile, Singapore Changi Airport houses a simulation chamber for food preparation in a low-pressure environment, taking it up a notch in both quality and cost (Moskvitch, 2015). Alternatively, passengers can be psychologically tricked into perceiving food to be more appetising than it is in reality. Some examples of this include the use of noise-cancelling headphones, cabin lighting designed for enhancing the appearance of food, or appealing language for describing meals. Both off-ground and in air, it was found that humans were inclined to respond more positively to dishes described in an appetising and detailed manner (Spence, 2017), rather than the vague choices of “sausage or pasta”. Whilst these innovations have covered some ground, De Syon (2008) also notes that sociology can influence our perceptions of food on a plane. The enjoyment of meals is dependent upon core social rituals like dining communally or comforting meal-time habits–both of which are tricky to navigate and achieve on a packed plane with front-on seating. What Goes Up Must Come Down Not long now! Accompanied by the movies you’ve played for the first time in your life and oodles of complimentary tea, there’s about half an hour left until landing. Jolt! The seatbelt sign is bold and bright as you can feel the plane gradually descending–it’s getting bumpy! As your plane rocks about and the airport comes into view as a speck in the distance, your descent is at the mercy of the crosswinds… and turbulence? Not only do these vortices of air cause havoc mid-flight, near cloud bands and thunderstorms (National Weather Service, 2019), they also pose a challenge during landing in the form of local, “clear-air” convection currents invisible on radar. These currents often occur in summer months and in the early afternoon when incoming solar energy is at its highest. In particular, they emerge when the surface of the earth is unevenly heated, including across regions such as the oceans, grassland, or in this case, the pavement near the airport. Consequently, this creates pockets of warm and cool air that rapidly rise and fall, creating downdrafts, thereby trapping planes ( figure 3 ). Luckily, pilots are specifically trained to recognise these surface winds, and can adjust their landing glidepath to suit local conditions forewarned in Terminal Aerodrome Forecasts for a steady, controlled descent (BOM, 2014). Figure 3. Varying glidepath due to local convection currents - note the different types of surfaces. Note. From Turbulence by National Weather Service. National Weather Service, 2019. https://www.weather.gov/source/zhu/ZHU_Training_Page/turbulence_stuff/turbulence/turbulence.htm . Copyright 2019 National Weather Service. Even with its bumpier experiences that draw endless complaints, it is undeniable that commercial aviation has grown tremendously over the century to deliver the safe, efficient and comfortable flights we are accustomed to today. Building upon a history of ingenuity and scientific discovery, it's almost certain that the industry will soar to even greater heights in our increasingly globalised world. Enough talk–you’re finally here! It’s a relief when you clamber from your seat, giving those arms and legs a much needed stretch. Now, time to trod along on solid ground… …and onto the connecting flight. Cheap stopover tickets. Darn it. References Aragão, P. (1995). Airbus A310-221, Swissair AN0521293 . Wikimedia Commons. https://upload.wikimedia.org/wikipedia/commons/9/9b/Airbus_A310-221%2C_Swissair_JP5963897.jpg Bagshaw, M., & Illig, P. (2019). The aircraft cabin environment. Travel Medicine , 429–436. https://doi.org/10.1016/b978-0-323-54696-6.00047-1 Bhattacharya, S., Singh, A., & Marzo, R. R. (2019). “Airplane ear”—A neglected yet preventable problem. AIMS Public Health , 6 (3), 320–325. https://doi.org/10.3934/publichealth.2019.3.320 BOM. (2014). Hazardous Weather Phenomena - Turbulence . Bureau of Meteorology. http://www.bom.gov.au/aviation/data/education/turbulence.pdf Chatfield, C. H. (1928). Monoplane or Biplane. SAE Transactions , 23 , 217–264. http://www.jstor.org/stable/44437123 De Syon, G. (2008). Is it really better to travel than to arrive? Airline food as a reflection of consumer anxiety. In Food for Thought: Essays on Eating and Culture (pp. 199–207). McFarland. Filburn, T. (2019). Cabin pressurization and air-conditioning. Commercial Aviation in the Jet Era and the Systems That Make It Possible , 45–57. https://doi.org/10.1007/978-3-030-20111-1_4 International Air Transport Association. (2024). Global Outlook for Air Transport . https://www.iata.org/en/iata-repository/publications/economic-reports/global-outlook-for-air-transport-june-2024-report/ Let’s Talk Science. (2024). Four Forces of Flight . Let’s Talk Science. https://letstalkscience.ca/educational-resources/backgrounders/four-forces-flight Moskvitch, K. (2015, January 12). Why does food taste different on planes? British Broadcasting Corporation. https://www.bbc.com/future/article/20150112-why-in-flight-food-tastes-weird NASA. (2022). Four forces on an Airplane . Glenn Research Center | NASA. https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/four-forces-on-an-airplane/ National Air and Space Museum. (2022). The Evolution of the Commercial Flying Experience . National Air and Space Museum; Smithsonian. https://airandspace.si.edu/explore/stories/evolution-commercial-flying-experience National Weather Service. (2019). Turbulence . National Weather Service. https://www.weather.gov/source/zhu/ZHU_Training_Page/turbulence_stuff/turbulence/turbulence.htm NOAA. (2023). Air pressure . National Oceanic and Atmospheric Administration. https://www.noaa.gov/jetstream/atmosphere/air-pressure Spence, C. (2017). Tasting in the air: A review. International Journal of Gastronomy and Food Science , 9 , 10–15. https://doi.org/10.1016/j.ijgfs.2017.05.001 Temora Aviation Museum. (2017). DH-82A Tiger Moth . Temora Aviation Museum. https://aviationmuseum.com.au/dh-82a-tiger-moth/ Thai Airways. (2018). THAI launches Michelin Star street food prepared by Jay Fai for Royal Silk Class and Royal First Class passengers . Thai Airways. https://www.thaiairways.com/en_ID/news/news_announcement/news_detail/News33.page Previous article Next article apex back to

Forward by Dr. Jen Martin Issue 1: September 24, 2021 Image from Dr Jen Martin I’m sitting cross-legged on top of an enormous granite boulder which is intricately patterned with lichen and overlooking the forest. It’s pouring with rain and the weather matches my mood: I feel confused and lost even though I know this patch of forest better than the back of my hand. For years I’ve been working here night and day studying the behaviour of a population of bobucks or mountain brushtail possums. I know their movements and habits intimately, having followed some of these possums from the time they were tiny pink jellybeans in their mothers’ pouches. I love this forest and its inhabitants, and I feel privileged beyond words that I’ve had glimpses of the world through these animals’ eyes. But today I feel despondent. I chose ecology because I wanted to make a difference in the world: to protect animals and the habitats they depend on. And there’s no question field research like mine is essential to successful conservation. To protect wildlife, we need to understand what different species do and what they need. But there’s a missing link. The people with the power to make decisions to conserve nature aren’t the same people who will read my thesis or papers or go to my conference talks. And that’s why I feel so lost. Why have I never learned how to share my work with farmers, policy makers and voters, all of whom may never have studied science? Why didn’t anyone tell me: it’s not just the science that matters, it’s having the confidence and the skills to communicate that science to the people who need to know about it? "Science isn't finished until it is communicated." Sir Mark Walport Fast forward 15 years and I can see my afternoon of despair in the rain was a catalyst. It’s why I decided I needed to learn how to talk and write about science for different audiences. And why I decided the most useful contribution I could make as a scientist was not to do the research myself, but rather to teach other scientists how to communicate effectively about their work. Science communication has been my focus for more than a decade now. You only need think of the Covid-19 pandemic, or the biodiversity or climate crises to realise that scientists play a pivotal role in tackling many of the problems we face. But scientists need to do more than question, experiment and discover; even the most brilliant research is wasted if no one knows it’s been done or the people whose lives it affects can’t understand it. Sir Mark Walport, former Chief Science Advisor to the UK Government, said: ‘Science isn’t finished until it’s communicated’. And I couldn’t agree more. The more scientists who seek out every opportunity to share their work with others - and know how to communicate about their work in effective and engaging ways - the better. And that’s why I couldn’t be more excited about OmniSci. Science really is everywhere, and I invite you to revel in its complexity, wonder, and relevance in these stories. And to applaud the science students behind this magazine who want to share their knowledge and passion with you. These are the scientists the world needs. Dr Jen Martin (@scidocmartin) Founder and Leader of the UniMelb Science Communication Teaching Program (@UniMelbSciComm)

< Back to Issue 6 Everything, Everywhere, All at Once: The Art of Decomposition by Arwen Nguyen-Ngo 28 May 2024 Edited by Subham Priya Illustrated by Jessica Walton From a single point in time, to a burst of colour and light, our universe came along into existence (The National Academy of Sciences, 2022). Within the multitude of galaxies and stars sprinkled across the universe, our little planet sits inside the solar system within the Milky Way. Like the way the universe came from a singularity, we were created from a singular cell. Over time, this cell divided and divided until we became these complex beings filled with different flavours of cells and the elements that comprise them. We are ever growing, just as the universe is ever expanding (Harvey, A., & Choi, C. Q., 2022). Though the fate of our universe is still a mystery, our fate is a little less mystical and thought-provoking – but that doesn’t make it any less interesting. Our less mystical yet fascinating fate begins with decomposition. Decomposition is the process in which dead tissue is broken down and converted into simpler forms. Large scavengers, such as vultures, foxes and crows, eat chunks of the corpse using it as a source of energy (Trees for Life, 2024). When these scavengers excrete waste — which is certainly not a pretty sight — their dung attracts smaller organisms like dung beetles. Little creepy crawlies — beetles, maggots and earthworms — all come along to the corpse, munching on its bits and pieces. They even lay their eggs in the openings of the corpse like the eyes, nose and mouth, an even LESSER pretty sight! If we zoom in further, we see microscopic bugs grow upon this dead body and take up nutrients. These bacteria then proceed with anaerobic decomposition, which occurs in the absence of oxygen. This produces gases like methane and carbon dioxide, causing the corpse to swell – the reason why dead bodies smell so bad (Trees for Life, 2024). After all that decaying, eventually, all that will remain of the carcass would be the cartilage, skin and bone, which a range of flies, beetles and parasites take advantage of (Trees for Life, 2024). Small critters such as mice and voles may come along, gnawing on the bone for calcium. How else are such little creatures supposed to get strong bones? Decomposition of dead flora is slightly different than the process for animals. For plant decomposition, fungi are the key players. When the tree leaves die and fall to the ground, they form a thick layer on the soil surface along with other dead plants, termed the litter layer (Trees for Life, 2024). Fungi have a body structure of white thread-like filaments called the hyphae, which resemble the white strings of floss. These white fungal floss take over the litter layer and consume nutrients whilst breaking down the litter layer. Unlike the decomposition of an animal, the decomposition process for plants is odourless. Phew! Over time, little wriggly earthworms begin to take control of breakdown. We use earthworms in our compost bins because they are great decomposers for dead plants and make organic fertiliser for our gardens. Whether an animal or a plant, decomposition takes each and every atom, from the carbon to the sodium atoms and recycles them to be used to create something new. It may be daunting from a human perspective to think that after all we’ve lived for, we would only be broken down and that the littlest bits of us, recycled. As our body takes its final breath, the brain fires the last of its neurons flooding our mind with bursts of colour, the way different elements cause the explosion of colours in fireworks lighting up the night sky. As the body decomposes, slowly each molecule of our body returns to the Earth, allowing for new life to take place. A sapling to sprout out from the depths of the soil. We are carried through the life of a new being; perhaps a tree, the grass or the flowers. Once again each molecule and atom in that being will return to the Earth like clockwork. And perhaps, return to the universe, a part of little sparkles that litter the night sky. References Harvey, A., & Choi, C. Q. (2022). Our expanding universe: Age, history & other facts . https://www.space.com/52-the-expanding-universe-from-the-big-bang-to-today.html Trees for Life. (2024). Decomposition and decay . https://treesforlife.org.uk/into-the-forest/habitats-and-ecology/ecology/decomposition-and-decay/#:~:text=Decomposition%20is%20the%20first%20 The National Academy of Sciences. (2022). How did the universe begin? How will it end? https://thesciencebehindit.org/how-did-the-universe-begin-how-will-it-end/#:~:text=The%20Big%20Bang%20theory%20says,in%20an%20already%20existing%20spac e Previous article Next article Elemental back to