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< Back to Issue 2 What’s the forecast for smallholder farmers of Arabica coffee? For millions of smallholder farmers residing in the rural highlands of East Timor and Ethiopia, Arabica coffee is a major source of income. Yet, weather patterns are threatening their future livelihoods. With global coffee yields predicted to dramatically reduce in coming decades, how will this touch Melbourne’s privileged cafe culture? by Hannah Savage 10 December 2021 Edited by Ashleigh Hallinan & Irene Yonsuh Lee Illustrated by Aisyah Mohammad Sulhanuddin The world loves its coffee. After crude oil, coffee is the most exported commodity in the world and global demands are projected to skyrocket alongside demographic growth (2). With a strong inclination by Australian citizens to participate in our bourgeois cafe culture, Australian demand can be expected to mimic this trend. However, as climate change continues to throw curveballs, pressures to satisfy these demands will be felt by all in the supply chain. There are many species of coffee beans, yet global consumption relies only on a narrow genetic selection. Coffea Arabica is the dominant coffee bean species in commercial production (approximately 70 percent), followed by Coffea Robusta (2). Agricultural research and breeding of these crops are not extensive, considering their high sensitivity to climate. If Arabica was a child, it would be the no-mash-touching-the-peas type. Though a laborious crop to farm, this fussy plant has low yield when too much shade deprives it of sunlight or too little shade shrinks soil moisture levels. It insists on altitudes 1000-2000m above sea level and 2000mm of rainfall per annum (2). Moreover, the optimal air temperature for Arabica is 18-21 degrees Celsius (3). With these environmental specifications, it is expected that half of the world’s optimal areas for growth of Arabica and Robusta are expected to be lost by 2050 due to climate change (13). After Hurricane Maria hurtled across Puerto Rico in 2017, 80 percent of coffee trees were destroyed and rural livelihoods were flattened overnight (4). Climate change does not pay sympathy towards poor and marginalized rural communities. Frequency and intensity of extreme weather is increasing in many developing nations. Changes in temperature, weather events and rainfall patterns are already challenging the ability of farmers to adapt. Rainfall distribution is becoming more erratic and unpredictable. This is a key concern to farmers as rain patterns correlate with timing of flowering and fruit production (2). Flowering is usually triggered by the first rains of the wet season, yet unpredictable rains during the year may cause flowering at undesirable times. Unsynchronized ripening requires additional harvesting cycles, costing farmers more money and labour. In addition, water scarcity and warmer air temperature also have profound impacts on harvests. Prolonged drought leads to misshapen or small beans with marks and imperfections (3). Low moisture and heat stress causes wilting, death of crops or acceleration of bean growth (3). At temperatures above 23 degrees, fruit ripens too fast for a rich, sweet coffee flavour to develop (2). What will thrive from these changing climatic conditions are pests, diseases and coffee rust fungus, which are becoming more prevalent in areas previously unfavourable for their survival (5). The insect Coffee berry borer has been a particular challenge to coffee producers globally, as it feeds on coffee beans and damages plantations. One to four generations of these critters are born each fruiting season (5). Climate change brings uncertainty to the future livelihoods of millions of smallholder coffee farmers around the world, who produce 70 percent of the world’s coffee (6). While world leaders dance around pretty statistical graphs of their carbon-cutting “achievements”, there is the underlying issue that global efforts to lower emissions will not have equal consequences across geographical locations. Poorer economies abundant in fossil fuel resources are pressured to implement policies that further increase their vulnerability and are left grappling to find quick coping strategies. Although it accounts for only a small percentage of global coffee production, East Timor is one of the most economically dependent on coffee. East Timor, the small-island nation 700km north-west of Darwin, has relied on its oil sector for economic development in recent decades, but now interest from foreign traders is depleting with global trends towards renewable energy. The coffee industry has been identified by the East Timor government as being a key opportunity for sustained economic growth and reduction of rural poverty. More than 18 percent of Timorese households rely on coffee production as their primary source of income (7). Coffee producers have a poverty rate of 47.9 percent, which is higher than the national rate of poverty, 40.3 percent (7). Many coffee-producing households are without electricity or access to clean water and regular meals. Figure 1: Distribution of coffee-selling households in Timor-Leste (7). Timorese Arabica coffee farmers today celebrate achieving yields their grandparents would have considered inadequate in the early 20th century during Portuguese occupation. This reflects how much the climate has changed across generations. Rain, once predictable to begin at the end of every November, is now inconsistent and reduced (1). Unfortunately, adaptive solutions often demand high investment and low reward in the initial implementation stages. Farmers may be reluctant to remove their aging, unproductive coffee trees and replant new ones for fear of losing a major source of income while waiting for financial output from the new growth (9). There is the temptation to instead plant new crops between existing ones, which exploits soil nutrients and harms coffee yields. Small short-term rewards also discourage poorer farmers from participating in collective reforestation projects (9). There is much work to be done to restore ecosystems devastated from rainforest clearances during Indonesian colonisation in 1975, which occurred mere months after independence from Portugal. Shade trees that characterise these tropical rainforests play important roles in supporting coffee growth. If farmers grow coffee crops amongst the rainforest, crops will benefit from wind shelter and rich soil nutrients (8). Shade reduces daytime air temperature and increases humidity. In the region of Baguia, the collaboration project WithOneSeed, (co-founded by Melbourne’s own ‘The Corner Store Cafe’ owners), actively alleviates poverty by restoring rainforests and granting farmers profits from carbon credit trades. Farmers plant an indigenous shade tree, carbon credits are purchased by foreign customers to offset fossil fuel emissions and a remuneration of 50cents per tree is given to farmers each year so long as the tree survives (10). WithOneSeed therefore provides rural coffee producers with income before trees mature and re-establishes tara bandu, customary resource management that sustained Timor Leste’s environment for centuries pre-colonisation. Organic beans are purchased from smallholder farms at a fair price by The Corner Store and roasted in Oakleigh. The supply chain is transparent and traceable and profits go towards funding WithOneSeed planting. Plus the coffee is good quality and grown without nasty chemicals! (11) Simple adaptive responses are also being made by coffee producers in the world’s fifth largest Arabica producer, Ethiopia (3). As Arabica has been said to originate here, it is perhaps unsurprising that 16 percent of the population rely on coffee for their livelihood. Figure 2: The main coffee growing areas of Ethiopia (3). In the case of a global temperature rise of 2.4 degrees Celsius, land areas suitable for coffee production in Ethiopia would be expected to decline by 21 percent (12). Resilience for smallholder Arabica producers now depends on creative solutions using limited technology and resources available to rural communities. Relocating farms to higher altitudes of Ethiopian highlands is one solution. But this transition comes at a cost for coffee producers in the form of social network losses. While climate conditions of higher land might be more suitable, other factors such as land tenureship rights and soil quality may pose new obstacles (13). As rain seasons shorten and dry seasons lengthen, Ethiopian coffee producers aim to boost irrigation by diverting nearby streams. This is an ancient and cost-effective solution that enables coffee to successfully be grown in areas classified unsuitable (3). Similarly, coffee producers are carrying out traditional techniques of mulching, where laying compost over soil conserves soil moisture (3). However, more government investment in supporting these adaptations is needed to keep ahead of global warming (3). Sustainable agriculture also needs to be met with fair prices. Many Ethiopian farmers do not have access to foreign traders who will pay premium prices that outweigh production costs. Coffee prices are determined by the international market, or “C price”, which is based on the theory that cost is proportional to global demand, with no consideration of quality or organic farming practices (14). This supports and encourages cheap, unsustainable agricultural practice because sustainable or not, farmers will receive the same revenue for their produce. To combat this, Ethiopian business CoQua, based in Addis Ababa city, facilitates opportunities for private producers to link with international clients and initiate direct lines of trade (14). Through CoQua, Melbourne’s Seven Seeds cafe were able to establish a trade relationship with private smallholder Ethiopian Arabica producers. Seven Seeds claim to pay 3.56 times the “C price” (14). Continue as we may to remain disconnected from the challenges of an environmentally fragile coffee industry, it is only a matter of time before global reduction makes noticeable impacts on Melbourne’s shielded society. What will happen when coffee stocks fail to meet Melbourne demand? Seven Seeds co-owner Mark Dundon told The Sydney Morning Herald that he predicts coffee prices will rise, despite general reluctance of consumers to spill more than one bank note from their wallets for a flat white (14). And why shouldn't we pay more for our hot beverages if producers vulnerable to food insecurity are paying more from the brunt of climate change? The following decades have a bitter outlook, but the recent pandemic outbreak enhanced our ability to envision rapid global disruptions where no corner of the world is excluded. Certainly a disruption to Melbourne coffee culture is a trivial issue in the grand scheme of things, but as consumers it is one worth considering now. The future for Melbourians to satisfy their cultural addiction balances dangerously on a series of environmental conditions being met in foreign highlands. While it’s true that being a “smart consumer” can feel like a matter of blind faith (how fair is fair trade?), favouring businesses that have ethical, direct lines of trade with smallholder producers is one small, immediate solution towards building a sustainable future for our treasured beans and those in the firing line of climate change. References: 1. Jack Board, “From crop to kopitiam, Asia's coffee is facing its biggest threat - climate change,” CNA, published 29 February 2020, https://www.channelnewsasia.com/asia/climate-change-coffee-prices-timor-leste-crops-1338741 2. Abaynesh Asegid, “Impact of Climate Change on production and Diversity of Coffee (Coffea Arabica L) in Ethiopia,” International Journal of Research Studies in Science, Engineering and Technology 7, 8 (2020): 31-38. 3. Kew Royal Botanic Garden, Coffee farming and climate change in Ethiopia, (London: The Strategic Climate Institutions Programme), 37, https://www.kew.org/sites/default/files/2019-01/Coffee%20Farming%20and%20Climate%20Change%20in%20Ethiopia.pdf 4. “How is Climate Change Impacting the Future of Coffee?,” TechnoServe Business Solutions to Poverty, published 16 September 2021, https://www.technoserve.org/blog/climate-change-impacting-future-coffee/ 5. Getachew Weldemichael and Demelash Teferi, “The Impact of Climate Change on Coffee (Coffea arabica L.) Production and Genetic Resources,” International Journal of Research Studies in Agricultural Sciences (IJRSAS) 5, 11, (2019): 26-34, DOI: http://dx.doi.org/10.20431/2454-6224.0511004. 6. Michon Scott, “Climate and Coffee,” Science Information for a climate-smart nation, published 19 June 2015, https://www.climate.gov/news-features/climate-and/climate-coffee 7. Brett Inder and Nan Qu, Coffee in Timor-Leste : What do we know ? What can we do ?, (Australia: Monash University), 17. 8. Simon P.J Batterbury, Lisa R. Palmer, Thomas R. Reuter, Demetrio do Amaral de Carvalho, Balthasar Kehi and Alex Cullen, “Land access and livelihoods in post-conflict Timor-Leste: no magic bullets,” International Journal of the commons, 9, 2, (2015): 619-647. 9. Lisa Walker, Understanding Timor Leste, (Dili: Swinburne Press, 2013), 22-158. 10. Andrew Mahar, “Meet the farmers helping to reforest Timor-Leste,” World Economic Forum, published 26 January 2021, Meet the farmers helping to reforest Timor-Leste | World Economic Forum (weforum.org) 11. “The Roastery,” The Corner Store, accessed November 2021, https://cornerstorenetwork.org.au/the-roastery 12. Cheikh Mbow et al., Climate Change and Land: an IPCC special report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems, (2019), https://www.ipcc.ch/site/assets/uploads/sites/4/2021/02/08_Chapter-5_3.pdf 13. Yen Pham, Kathryn Reardon-Smith, Shahbaz Mushtaq and Geoff Cockfield, “The impact of climate change and variability on coffee production: a systematic review”, Climatic Change, 156, (2019): 609-630, The impact of climate change and variability on coffee production: a systematic review | SpringerLink 14. Dani Valent, “ 'The industry's at risk': the high price of cheap coffees,” published 31 May 2019, national/the-industry-s-at-risk-the-high-price-of-cheap-coffees-20190528-p51rti.html Previous article back to DISORDER Next article

< Back to Issue 7 Staying at the Top of Our Game: the Evolutionary Arms Race by Aizere Malibek 22 October 2024 edited by Rita Fortune illustrated by Aizere Malibek Organisms have been competing for biological domination since the beginning of life. Evolutionary adaptations arise from genetic mutations, which propel biodiversification and allow organisms with favourable traits to survive and reproduce. This is the foundation of Charles Darwin’s Theory of Evolution, explaining the rise of antimicrobial resistance and contagious viruses, while also offering solutions to these threats in public health and medicine. Mutations in the DNA of pathogens allow them to adapt to our immunological defences and invade our bodies. Conversely, the variation in our immune cells allows us to detect and defend against pathogens as a counter-adaptation. Medicine has advanced dramatically in the recent decades, with novel vaccines, antivirals and antibiotics being developed quicker than ever before. Unfortunately, persistent pathogens have found a way to survive attacks from our immune systems and drugs, making it difficult to devise an effective cure for these infections. Take HIV, for instance: the virus activates programmed cell-death in our CD4+ T immune cells and alters their metabolism as a survival mechanism (Gougeon, 2003; Palmer et al., 2016). In turn, this directly reduces the immune system’s ability to defend against the virus. This is further complicated by the high mutation rate of HIV, leading to rapid resistance to various treatment options (Gupta et al., 2018). Fortunately, scientific discoveries are helping us develop solutions for infectious diseases. It was found that HIV is susceptible to immune responses in its initial immature stages, which has become a target of the current pursuits in vaccine development for the virus (Picker et al., 2012). Vaccines are beneficial in these cases because they expose memory cells in order to inactive microbial antigens, which are a key cell involved in our active immune responses. This allows our bodies to tackle the pathogens more efficiently, reducing the symptoms and long-term effects of infection. Another emerging treatment option is through CRISPR-Cas9 technology. Originally discovered as a bacterial defence system against viruses, CRISPR allows scientists to precisely edit genes. This technology is being explored not only for its potential to correct genetic disorders, but also as a weapon against pathogens. Researchers are looking into using CRISPR to target viral DNA in infected human cells, cutting it out before the virus can replicate (Mengstie & Wondimu, 2021). If successful, CRISPR could be a game-changer in the fight against diseases like HIV, influenza, and even the next pandemic. However, HIV is just one example of this ongoing evolutionary arms race between pathogens and humans. The phenomenon isn’t restricted to just viruses; bacteria and fungi have also become significant opponents. The rise of antibiotic resistance in bacteria is an alarming and rising public health issue today. Antibiotics are increasingly losing their efficacy due to misuse and overprescription. Pathogens like Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) have developed multiple resistance mechanisms, including the production of enzymes that break down the antibiotic molecules before they can exert their effect (Reygaert, 2018). Methicillin-resistant Staphylococcus aureus (MRSA) is a prime example of antibiotic resistance. Initially, methicillin was developed to treat penicillin-resistant strains of bacteria. However, as methicillin became widely used, new strains of S. aureus emerged that could resist the potent drug. MRSA infections are now incredibly difficult to treat and pose a serious public health threat, particularly in hospitals and healthcare settings where immunocompromised patients are most vulnerable (Collins et al., 2010). Vaccines are not as effective against bacteria and fungi due to the more complex structures of these organisms. So how do we stay ahead in this race? One promising area of research is the development of next-generation antibiotics and antivirals. Researchers are now investigating bacteriophages—viruses that specifically infect bacteria—as a potential solution to antibiotic-resistant infections. These phages, which evolve alongside bacteria, could be used to target and destroy harmful bacterial strains without the collateral damage caused by traditional antibiotics (Plumet et al., 2022). While scientific innovation is key to staying ahead in the evolutionary arms race, public health policies play an equally important role. Misuse of antibiotics, for instance, has significantly accelerated the rise of antibiotic-resistant bacteria outside healthcare settings (David & Daum, 2010). Governments and healthcare organisations are now pushing for stricter regulations on antibiotic prescriptions and promoting the responsible use of these drugs. Global collaboration is also essential. Pathogens don’t respect national borders, and the spread of infectious diseases is a global issue. Initiatives like the World Health Organisation’s Global Antimicrobial Resistance Surveillance System (GLASS) are crucial in monitoring and controlling the spread of resistant pathogens worldwide. By sharing data and resources, countries can better coordinate their responses to emerging threats, mitigating the risks posed to global health. The dynamic shifts in power between humans and pathogens continues to unfold in this evolutionary arms race. While scientific innovation is allowing the development of new tools, from vaccines to gene-editing technologies, we must also adopt policies that promote responsible drug use and global cooperation. In this race, staying at the top of our game requires constant vigilance, innovation, and adaptation—because pathogens certainly aren’t slowing down. The stakes are high, but with continued research and collaboration, we have the potential to maintain the upper hand in this ever-evolving battle for survival. References Collins, J., Rudkin, J., Recker, M., Pozzi, C., O'Gara, J. P., & Massey, R. C. (2010). Offsetting virulence and antibiotic resistance costs by MRSA. Isme Journal, 4(4), 577-584. https://doi.org/10.1038/ismej.2009.151 David, M. Z., & Daum, R. S. (2010). Community-Associated Methicillin-Resistant Staphylococcus aureus : Epidemiology and Clinical Consequences of an Emerging Epidemic. Clinical Microbiology Reviews, 23(3), 616-+. https://doi.org/10.1128/cmr.00081-09 Gougeon, ML. Apoptosis as an HIV strategy to escape immune attack. Nat Rev Immunol 3 , 392–404 (2003). https://doi.org/10.1038/nri1087 Gupta, R. K., Gregson, J., Parkin, N., Haile-Selassie, H., Tanuri, A., Forero, L. A., Kaleebu, P., Watera, C., Aghokeng, A., Mutenda, N., Dzangare, J., Hone, S., Hang, Z. Z., Garcia, J., Garcia, Z., Marchorro, P., Beteta, E., Giron, A., Hamers, R., . . . Bertagnolio, S. (2018). HIV-1 drug resistance before initiation or re-initiation of first-line antiretroviral therapy in low-income and middle-income countries: a systematic review and meta-regression analysis. Lancet Infectious Diseases, 18(3), 346-355. https://doi.org/10.1016/s1473-3099(17)30702-8 Mengstie, M. A., & Wondimu, B. Z. (2021). Mechanism and Applications of CRISPR/Cas-9-Mediated Genome Editing. Biologics-Targets & Therapy, 15, 353-361. https://doi.org/10.2147/btt.S326422 Palmer, C. S., Cherry, C. L., Sada-Ovalle, I., Singh, A., & Crowe, S. M. (2016). Glucose Metabolism in T Cells and Monocytes: New Perspectives in HIV Pathogenesis. EBioMedicine, 6, 31–41. https://doi.org/10.1016/j.ebiom.2016.02.012 Picker, L. J., Hansen, S. G., & Lifson, J. D. (2012). New Paradigms for HIV/AIDS Vaccine Development. In C. T. Caskey, C. P. Austin, & J. A. Hoxie (Eds.), Annual Review of Medicine, Vol 63 (Vol. 63, pp. 95-111). https://doi.org/10.1146/annurev-med-042010-085643 Plumet, L., Ahmad-Mansour, N., Dunyach-Remy, C., Kissa, K., Sotto, A., Lavigne, J. P., Costechareyre, D., & Molle, V. (2022). Bacteriophage Therapy for Staphylococcus Aureus Infections: A Review of Animal Models, Treatments, and Clinical Trials. Frontiers in cellular and infection microbiology, 12, 907314. https://doi.org/10.3389/fcimb.2022.907314 Reygaert, W. C. (2018). An overview of the antimicrobial resistance mechanisms of bacteria. Aims Microbiology, 4(3), 482-501. https://doi.org/10.3934/microbiol.2018.3.482 Previous article Next article apex back to

Ever wondered what it's like to contribute to OmniSci? We spoke to Tanya Kovacevic about her experience, from starting writing during lockdown to what's in the words for Issue 4: Mirage! Tanya is currently in her third year of the Bachelor of Biomedicine and studying a concurrent diploma in Italian. For Issue 4: Mirage, she is contributing to four articles as an editor. Mee t OmniSci Editor Tany a Kovacevic Tanya is an editor at OmniSci, currently in her third year of the Bachelor of Biomedicine and studying a concurrent diploma in Italian. For Issue 4: Mirage, she is contributing to four articles as an editor. interviewed by Caitlin Kane What are you studying? I am studying a Bachelor of Biomedicine, currently in third year, and a Diploma in Italian. I’m majoring in human structure and function, which looks at how the body works: the muscles, the bones, the visceral organs, everything. I’m hoping to get a research subject placement at the Florey Institute because I have a very big passion for neurology. I feel like it will be fun to get exposure to both what’s happening behind the scenes through research and be able to apply it in the future as well. I want to hopefully go into medicine and become a GP with a focus on neurology. What first got you interested in science? My primary school wanted to start introducing science subjects and I was chosen as one of the students to give it a shot. I found that I really enjoyed it. Especially when the skeleton was brought out of the closet–all dusty and stuff–and we finally started to use it. Then compulsory science subjects at high school, I continued to find that interesting. I thought, I guess I’ll stick with this. What is your role at OmniSci? I started off writing a piece during lockdown and I wrote my first piece about lockdown fatigue. I remember speaking to my psychologist about it because I was experiencing it. When I heard of it, I thought this actually explains a lot so I wanted to share that with other people. I applied for the editing role as well, so that’s what I’ve been doing these last three years. I quite enjoy helping people flesh out their ideas. I find that I’m quite an analytical and meticulous person, so I will always look for the little things that could go wrong and always like to correct them. I thought it was a pretty good fit! What would you say to someone else who was thinking about getting involved at OmniSci? It’s really open with what you can do. You can communicate with so many different people. Getting involved is a good way of exploring your own interests and putting your skills to the test. It’s nice having something on the side that takes your mind off study but is also related to things that you enjoy. It's a good pastime but also something that gives you professional experience. Kills two birds with one stone. What is your favourite thing about contributing at OmniSci so far? I like seeing when it gets printed and everything has been put together, because you really see the contribution of everyone, and it all falls into place. While you're doing it, it’s sort of “I’ve got to focus on this aspect,” but then it’s nice seeing how your feedback has been included and how people have really improved in their writing and been able to use the skills of others. It’s a very collaborative thing that comes together. It’s a good product, especially with all the cool illustrations. I love looking at art–not very good at it, but I love looking at it. It’s exciting to see something that I was interested in while writing or editing come to life in a physical representation, an artistic interpretation. Can you give us a sneak peek or pitch of what you're working on this issue? With Mirage it’s very open ended. Placebo effect is something that everyone talks about, but there are hidden aspects that we don’t quite think about. It’s interesting looking at a bit of the biology behind it, particularly between the different sexes. That’s one thing to look out for! What do you like doing in your spare time (when you're not contributing at OmniSci)? Reading all sorts of stuff, watching TV shows and movies–I’m a bit of a film fanatic as well. Going outside and playing tennis or walking my dog. I love spending time with my dog. My dog is my life so he takes up a bit of my time. Do you have any media recommendations? One of my favourite international films is called ‘I cento passi’ or ‘One Hundred Steps’. It’s an Italian movie about the mafia and the man it’s based on is very courageous. I think it’s something we all need to see to remind us that we do have a voice even in such horrible, dark moments. I think that’s definitely something that people can look into! It’s on Youtube with subtitles [https://www.youtube.com/watch?v=lhc9S8txE9c]. Which chemical element would you name your firstborn child (or pet) after? That’s a very um… specific question! Curium is one, so Marie Curie. Fantastic woman, pioneering woman, who was definitely ahead of her time. Or Thorium, because Thor! Read Tanya's articles Sick of lockdown? Let science explain why. Law and Order: Medically Supervised Injecting Centres Space exploration in Antarctica Believing in aliens... A science? Behind the Mask From Fusion to Submarines: A Nuclear Year

Have you ever wondered if trees talk to each other? Happily, many scientists across time have had the same thought. So much fascinating knowledge has arisen from their research about the intricacies of trees and the different ways they converse with one another. Chatter Silent Conversations: How Trees Talk to One Another By Lily McCann There are so many conversations that go on beyond our hearing. This column explores communication between trees and how it might change the way we perceive them. Edited by Ethan Newnham, Irene Lee & Niesha Baker Issue 1: September 24, 2021 Illustration by Rachel Ko It’s getting brighter. A long, long winter is receding and warm days are flooding in. I’m not one for sunbathing, but I love to lie in the backyard in the shade of the gums and gaze up into the branches. They seem to revel in the weather as much as I do, waving arms languidly in the light or holding still as if afraid to lose a single ray of sun. If there’s a breeze, you might just be able to hear them whispering to one another. There’s a whole family of these gums in my backyard and each one is different. I can picture them as distinctly as the faces of people I love. One wears a thick, red coat of shaggy bark; another has pale, smooth skin; a third sheds its outer layer in long, stringy filaments that droop like scarves from its limbs. These different forms express distinct personalities. Gum trees make you feel there is more to them than just wood and leaves. There’s a red gum in Central Victoria called the ‘Maternity Tree’. It’s incredible to look at. The huge trunk is hollowed out and forms a sort of alcove or belly, open to the sky. Generations of Dja Dja Wurrung women have sought shelter here when in labour. An arson attack recently blackened the trunk and lower branches, but the tree survived (1). Such trees have incredibly long, rich lives. Imagine all the things they would say, if they could only tell us their stories. Whilst the ‘whispering’ of foliage in the wind may not have significance beyond its symbolism, there are other kinds of communication trees can harness. All we see when a breeze blows are branches and leaves swaying before it, but all the time a plethora of tiny molecules are pouring out from trees into the air. These compounds act like tiny, encrypted messages riding the wind, to be decoded by neighbours. They can carry warnings about unwanted visitors, or even coordinate group projects like flowering, so that trees can bloom in synchrony. If we turn our gaze lower we can see that more dialogue spreads below ground. Trees have their own telephone cable system (7), linking up members of the same and even different species. This system takes the form of fungal networks, which transfer nutrients and signals between trees (3). Unfortunately, subscription to this network isn’t free: fungi demand a sugar supply for their services. Overall, though, the relationship is beneficial to both parties and allows for an effective form of underground communication in forests. These conversations are not restricted to deep-rooted, leaf-bearing beings: trees are multilingual. A whole web of inter-species dialogue murmurs amongst the branches beyond the grasp of our deaf ears. Through the language of scent, trees entice pollinators such as bees and birds to feed on their nectar and spread their pollen (4). They warn predators against attacking by releasing certain chemicals (5). They can even manipulate other species for their own defence: when attacked by wax scale insects, a Persimmon tree calls up its own personal army by alerting ladybugs, who feed on the scales, averting the threat to the tree (6). Such relationships demonstrate the crucial role trees play in local ecosystems and their essentially cooperative natures. Trees can be very altruistic, especially when it comes to family members. Mother trees foster the growth of young ones by providing nutrients, and descendants support their elderly relatives - even corpses of hewn-down trees - through their underground cable systems. These intimate, extensive connections between trees are not so different from our own societal networks. Do trees, too, have communities, family loyalties, friends? Can they express the qualities of love and trust required, in the human world, for such relationships? This thought begs the question: Can trees feel? They certainly have an emotional impact on us. I can sense it as I lie under the gums. Think about the last time you went hiking, sat in a tree’s shade, walked through a local park. There’s something about being amongst trees that calms and inspires. Science agrees: one study has shown that walking in forests is more beneficial to our health than walking through the city. How do trees manage to have such a strong effect on us? Peter Wohlleben, German forester and author of The Hidden Life of Trees, suggests that happy trees may impart their mood to us (9). He compares the atmosphere around ‘unhappy’ trees in plantations where threats abound and stress signals fill the air to old forests where ecosystem relations are more stabilised and trees healthier. We feel more relaxed and content in these latter environments. The emotive capacity of trees is yet to be proven scientifically, but is it a reasonable claim? If we define happiness as the circulation of ‘good’ molecules such as growth hormones and sugars, and the absence of ‘bad’ ones like distress signals, then we may suggest that for trees an abundance of good cues and a lack of warnings could be associated with a positive state. And this positive state - allowing trees to fulfill day-to-day functions, grow and proliferate, live in harmony with their environment - could be termed a kind of happiness in its own right. This may seem like a stretch - after all, how can you feel happiness without a brain? But Baluska et al. suggest that trees have those too, or something like them: command centres, integrative hubs in roots functioning somewhat like our own brains (10). Others compare a tree to an axon, a single nerve, conducting electrical signals along its length (11). Perhaps we could say that a forest, the aggregate of all these nerve connections, is a brain. Whilst we can draw endless analogies between the two, trees and animals parted ways 1.5 billion years ago in their evolutionary paths (12). Each developed their own ways of listening and responding to their environments. Who’s to say whether they haven’t both developed their own kinds of consciousness? If we take the time to contemplate trees, we can see that they are infinitely more complex and sensitive than we could have imagined. They have their own modes of communicating with and reacting to their environment. The fact is, trees are storytellers. They send out a constant flow of information into the air, the soil, and the root and fungal systems that join them to their community. Even if we can’t converse with trees in the same way that we converse with each other, it’s worth listening in on their chatter. They could tell us about changes in climate, threats to their environment, and how we can best help these graceful beings and the world around them. References: 1. Schubert, Shannon. “700yo Aboriginal Maternity Tree Set Alight in Victoria.” www.abc.net.au , August 8, 2021. https://www.abc.net.au/news/2021-08-08/dja-dja-wurrung-birthing-tree-set-on-fire/100359690. 2. Pichersky, Eran, and Jonathan Gershenzon. “The Formation and Function of Plant Volatiles: Perfumes for Pollinator Attraction and Defense.” Current Opinion in Plant Biology 5, no. 3 (June 2002): 237–43. https://doi.org/10.1016/s1369-5266(02)00251-0.; Falik, Omer, Ishay Hoffmann, and Ariel Novoplansky. “Say It with Flowers.” Plant Signaling & Behavior 9, no. 4 (March 5, 2014): e28258. https://doi.org/10.4161/psb.28258. 3. Simard, Suzanne W., David A. Perry, Melanie D. Jones, David D. Myrold, Daniel M. Durall, and Randy Molina. “Net Transfer of Carbon between Ectomycorrhizal Tree Species in the Field.” Nature 388, no. 6642 (August 1997): 579–82. https://doi.org/10.1038/41557. 4. Buchmann, Stephen L, and Gary Paul Nabhan. The Forgotten Pollinators. Editorial: Washington, D.C.: Island Press/Shearwater Books, 1997. 5. De Moraes, Consuelo M., Mark C. Mescher, and James H. Tumlinson. “Caterpillar-Induced Nocturnal Plant Volatiles Repel Conspecific Females.” Nature 410, no. 6828 (March 2001): 577–80. https://doi.org/10.1038/35069058. 6. Zhang, Yanfeng, Yingping Xie, Jiaoliang Xue, Guoliang Peng, and Xu Wang. “Effect of Volatile Emissions, Especially -Pinene, from Persimmon Trees Infested by Japanese Wax Scales or Treated with Methyl Jasmonate on Recruitment of Ladybeetle Predators.” Environmental Entomology 38, no. 5 (October 1, 2009): 1439–45. https://doi.org/10.1603/022.038.0512. 7, 9. Wohlleben, Peter, Jane Billinghurst, Tim F Flannery, Suzanne W Simard, and David Suzuki Institute. The Hidden Life of Trees : The Illustrated Edition. Vancouver ; Berkeley: David Suzuki Institute, 2018. 10. Baluška, František, Stefano Mancuso, Dieter Volkmann, and Peter Barlow. “The ‘Root-Brain’ Hypothesis of Charles and Francis Darwin.” Plant Signaling & Behavior 4, no. 12 (December 2009): 1121–27. https://doi.org/10.4161/psb.4.12.10574. 11. Hedrich, Rainer, Vicenta Salvador-Recatalà, and Ingo Dreyer. “Electrical Wiring and Long-Distance Plant Communication.” Trends in Plant Science 21, no. 5 (May 2016): 376–87. https://doi.org/10.1016/j.tplants.2016.01.016. 12. Wang, Daniel Y.-C., Sudhir Kumar, and S. Blair Hedges. “Divergence Time Estimates for the Early History of Animal Phyla and the Origin of Plants, Animals and Fungi.” Proceedings of the Royal Society of London. Series B: Biological Sciences 266, no. 1415 (January 22, 1999): 163–71. https://doi.org/10.1098/rspb.1999.0617.

< Back to Issue 7 Peaks and Perspectives: A Word from the Editors-in-Chief by the Editors-in-Chief 22 October 2024 illustrated by Ingrid Sefton In geometry, an apex may refer to the highest point of a solid figure, such as a pyramid. Move to the fields of ecology and evolution, and we find apex predators, overseeing population dynamics atop of the food chain. We too find ourselves situated at an apex position in society – observing, experimenting with, and utilising the world at our feet for scientific innovation and headway. Common amongst these apexes in science is unsurprisingly the emphasis on reaching soaring heights and breathtaking summits. We strive to reach these peaks, endpoints that are perceived to signal scientific greatness and knowledge. We create, we innovate, we explore – all with this vision in mind. Yet, this is not, or rather, should not be the “why” for scientific endeavour. Implicit in reaching the highest point of something is the notion that there is no further to climb. That upon reaching an apex, all that remains is to precariously balance upon this peak and hope not to misstep, tumbling down from great heights. Scientific curiosity and a yearning to understand the science underpinning our existence is not about reaching the envisioned apex. It is instead defined by the steps climbed by us and our predecessors in our journey towards discovery, and in turn, the steps that remain untrod and paths that remain uncharted. The routes we are yet to take will be forever changing. Piloted by the evolving foci of our society, where and how we may next seek to innovate remains undetermined. Infinite possibilities abound. With a birds-eye view, Apex visualises the new levels of human-tech connectivity, ills of antimicrobial resistance, and the fringes of outer space that loom on the horizon; with it, encouraging readers to envisage where the next steps may lie. Yet alongside these perspectives of the expansive, limitless world, Apex invites reflection and hypotheticals. Taking time to pause from the unfaltering upward march of innovation, this issue embraces the breathtaking view of where we are now. Apex guides us to consider time-old traditions and technicalities from a new perspective, celebrating those who have paved the way to the peaks of modern science. Wandering within, across and between disciplines of Science, it is these ruminations along the way that enrich the journey. After all, what is scientific advancement without knowing what we do not know? In the words of Sir Isaac Newton, it is by standing on the shoulders of giants that we hope to see further. So come along, and revel in the expansive view. Let the heights of scientific innovation inspire you, but don’t let such peaks constrain you. Previous article Next article apex back to

By Monica Blasioli < Back to Issue 3 The Ethics of Space Travel By Monica Blasioli 10 September 2022 Edited by Yvette Marris and Tanya Kovacevic Illustrated by Aisyah Md Sulhanuddin Next "That's one small step for man, one giant leap for mankind." Even without a hyphen next to that quote, people around the world will recognise it. The mere sentence can bring forth a flurry of emotions and thoughts - national pride, curiosity, nervousness, and even scepticism - but most will recognise them as the first words spoken by Neil Armstrong, the first man to walk on the moon, in July of 1969. Despite this, there are deeper considerations that need to be taken when discussing space travel than what first meets the eye. Just like on Earth, there are a number of health and environmental implications that should not be ignored in the flurry of excitement to explore the wonders of space. Not only are passenger safety and climate change areas of concern, particularly with constant and normalised space travel, but so are the ethics of monetising from experiences that can inflict so much damage. First and foremost, space exploration can foster communication and cooperation between countries. The National Aeronautics and Space Administration (NASA), an independent branch of the US federal government, involves countries such as Australia, Italy, Russia, France and Germany. NASA prides themselves on their international cooperation, celebrating their achievements in bringing together a global community of scientists to collaborate on space research and communication. And this is truly the reality! For over 64 years, NASA has successfully commercialised off the excitement surrounding space exploration, creating jobs across the globe (and in space), and sparking interest in science internationally through captivating space images, educational programs and videos, and even a clothing range at H&M! In particular, collaborative work and research conducted at the International Space Station (ISS) has been a major benefit to humans. Despite not even being on Earth itself, it has deepened the understanding of our home planet. Research has revealed how the human body reacts to increased exposure to radiation and how plants grow in space, enabling a better awareness of how plants grow on Earth, as well as how chemicals and materials react to low-gravity environments. In fact, without space research, we wouldn’t be able to comprehend some things we take for granted on Earth. For example, how the moon impacts the tides and how long a day lasts (and also what your personality traits are, if you buy into that stuff). However, there is always a dark side to the moon. The normalisation of space travel through its commercialisation could have devastating environmental impacts. On July 20 2021, Amazon founder Jeff Bezos took off to space in his New Shepard rocket, built by his own company, Blue Origin. For ten minutes and ten seconds. Bezos and his company celebrated this moment as the beginning of their vision for a future where space travel, along with citizens living and working in space, is normalised - and, of course, commercialised by his company. While we congratulate Bezos and his team, can we really rejoice in Bezos’ vision for the future knowing that the impacts for those back at home could be deadly? A 2010 study using a global climate model found that 1000 launches of suborbital rockets each year would produce enough carbon to change polar ozones by 6%, increase the temperature over the poles by one degree Celsius, and reduce polar sea ice levels by 5%. (1). And of course, the rockets could contribute to climate change. The vast amount of soot produced by spaceships yields the potential to further break down the Earth’s atmosphere, and more worryingly, even begin to break down the current untouched outer layers (2). Once again, these impacts make it difficult to justify Bezos’ plans to make paying for space travel a ‘norm’ in our lives. The precise impacts of this may be unknown, however, Karen Rosenlof, senior scientist from the Chemical Sciences Laboratory in the U.S. The National Oceanic and Atmospheric Administration, warns that releasing pollutants into spaces they have never been before never has positive outcomes (2). There seems to be little concern by Bezos about these effects and too much concern on monopolising from the endeavours instead. And this is only the beginning - the potential health disasters could be even worse. Just like Chris Pratt and Jennifer Lawrence in Passengers, we are not immune to a potential space-based disaster. For over 50 years, NASA’s Human Research Program (HRP) has been researching the impacts of space travel on humans - and trying to decrease the impacts on their astronauts. Many space radiation particles are more deadly than those on Earth, and more difficult to be shielded from, increasing the chance of cancer and degenerative diseases, such as cataracts (3). The usual radiation protective measures do not hold up, particularly when travelling further distances from Earth, to a planet like Mars, where the radiation exists at higher, deadlier levels (3). In fact, on a trip to Mars, three different gravity fields would be encountered, and passengers would need to readjust to Earth’s gravity when returning (3). This damages spatial orientation, coordination and balance, as well as causing acute space motion sickness in travellers, which can lead to chronic conditions (3). All in all, this is still only the beginning of space travel and the research surrounding it. There are still - quite literally - galaxies of information that still need to be uncovered, meaning humans don’t have all the answers yet. This reach to the stars may blind us to issues later down the line which still lack research - long term exposure to radiation, prolonged consumption of dehydrated “space” food, the change in gravity, and how all of these cumulatively will interact in the long term… the list goes on and on. Are further endeavours into space worth the impacts on our world and fellow humans alike? And all to further line the pockets already filled with billions of dollars? References 1. Ross M, Mills M, Toohey D. Potential climate impact of black carbon emitted by rockets. Geophysical Research Letters. 2010 December 28;37(24):1-5. 2. Pultarova S. The rise of space tourism could affect Earth's climate in unforeseen ways, scientists worry [Internet]. 2021 July 26. Available from: https://www.space.com/environmental-impact-space-tourism-flights 3. Abadie L, Cranford N, Lloyd C, Shelhamer M, Turner J. The Human Body in Space; 2021 February 3 [updated 2022 February 24]. Available from: https://www.nasa.gov/hrp/bodyinspace/ Previous article Next article alien back to

By Andrew Lim < Back to Issue 3 Hope, Humanity and the Starry Night Sky By Andrew Lim 10 September 2022 Edited by Manfred Cain and Yvette Marris Illustrated by Ravon Chew Next Image 1: The Arecibo Observatory looms large over the forests of Puerto Rico The eerie signal reverberates out over the Caribbean skies, amplified by the telescope below. It oscillates between two odd resonating tones for little more than a couple of minutes, then shuts off. Eminent scholars, government administrators and elected representatives watch in wonderment, their eyes glued open. The forest birds and critters chirp and sing. It is November 16, 1974 – from a little spot in Arecibo, Puerto Rico, Earth is about to pop its head out the door to say ‘hello’. Those sing-song tunes, beamed out into space on modulated radio waves, are a binary message designed for some alien civilisation– a snapshot of humanity in 1679 bits. It sounds like the beginning of a bad sci-fi flick: the kind that ends with little green men coming down in UFOs for a cheap-CGI first contact. But it isn’t, and it doesn’t. Instead, the legacy of those telescope-amplified sounds – that ‘Arecibo Message’ – has a place in history as a symbol of human cooperation, here on Earth rather than in the stars. The message’s unifying vision imbued the famous ‘pale blue dot’ monologue of its co-creator Carl Sagan; and led to the launch of a multi-year international programme designing its successor message 45 years on, presenting extra-terrestrial communication as a mirror of our earth-bound relations. A unified message symbolizing a unified humanity. The previous feature in this series (Discovery, Blue Skies…and Partisan Bickering?) ended with a declaration of nuance: that science in politics matters solely because it transcends partisan bounds with clear analysis. Yet, looking at stories like Arecibo’s, so imbued with human optimism, maybe this cold, logical formulation isn’t enough. Perhaps for all its focus on appropriations bills, initiative funding and flawed infrastructure, that perspective lends insufficient weight to science’s ability to inspire, to cut through the fog of day-to-day policy battles with a beacon of what could yet be. But is this talk of hope just ideological posturing – a triumphant humanism gone mad? Or could there be some merit to its romantic vision of humanity speaking with one voice to the stars? Might it possibly be that science really is the key to bridging our divisions? COOPERATION AMIDST CHAOS Well, why not begin in the times of Arecibo? After all, the interstellar message came at a key moment in the Cold War. Just a few months before, US President Richard Nixon had made his way to Moscow to meet with General Secretary Leonid Brezhnev, leader of the USSR. The signing of a new arms treaty, a decade-long economic agreement and a friendly state dinner at the Kremlin all seemed to indicate a world inching away from the edge of nuclear apocalypse. Such pacifist optimism is found readily in the message’s surrounding documents, with its research proposal speaking glowingly of future messages designed and informed by “international scientific consultations…[similar to] the first Soviet-American conference on communication with extraterrestrial [sic] intelligence.” Indeed, it seems the spirit of the age. Soon after the Arecibo message’s transmission, the Apollo-Soyuz Test Project would see an American Apollo spacecraft docking with a Soviet Soyuz module. Mission commanders Thomas Stafford and Alexei Leonov conducted experiments, exchanged gifts, and even engaged in the world’s first international space handshake – a symbol of shared peace and prosperity for both superpowers. Image 2: Thomas Stafford and Alexei Leonov shake hands on the Apollo-Soyuz mission Apollo-Soyuz marked an effective end to the US-USSR ‘Space Race’ (discussed in Part I of this series), and would lead to successor programmes, including a series of missions where American space shuttles would send astronauts to the Russian space station Mir, and eventually the building of the 21st-century International Space Station (ISS). Science seemed capable of forging cooperation amidst the greatest of disagreements, transcending our human borders and divides. Frank Drake, the designer of the Arecibo Message, was filled with optimism, hoping that his message might herald the beginning of a new age, marked by united scientific discovery and unparalleled human growth. He triumphantly declared to the Cornell Chronicle on the day of its transmission that “the sense that something in the universe is much more clever than we are has preceded almost every important advance in applied technology. SCIENTIFIC SPHERES OF INTEREST Yet this rose-tinted vision of science as the great mediator perhaps has a few more cracks in it than its advocates like to admit. Even at the height of Nixon’s Cold War détente, science was not pure intellectual collaboration. Henry Kissinger, Nixon’s National Security Advisor and later Secretary of State, pioneered ‘triangular diplomacy’, the art of playing adversaries off against one another with alternating threats and incentives. In later years, he would declare that “it was always better for [the US] to be closer to either Moscow or Peking than either was to the other”. And as he opened channels of communication with China, it was science that would pave the way for a stronger relationship. In the Shanghai Communique negotiated on Nixon’s 1972 trip to China, both sides “discussed specific areas in such fields as science [and] technology…in which people-to-people contacts and exchanges would be mutually beneficial [and] undert[ook] to facilitate the further development of [them].” Scientific collaboration (often manipulated by spy agencies from the CIA to the KGB) was the carrot beside the military stick – a central part of building alliances in a world of realpolitik. To Kissinger and his colleagues, the world was to be divided into Image 3: US President Richard Nixon shakes hands with CCP Chairman Mao Zedong in China in 1972 spheres of influence, even in times of peace – and science was best used as a way of strengthening and shoring up your own prosperity. It is a realist view of science diplomacy that continues to this day, with US Secretary of State Hillary Clinton noting in Image 4: Chinese Foreign Minister Wang Yi meets with his Cambodian counterpart Prak Sokhonn in September 2021, pledging additional aid and vaccine doses. 2014 that “educational exchanges, cultural tours and scientific collaboration…may garner few headlines, but… [can] influence the next generation of U.S. and [foreign] leaders in a way no other initiative can match”. To both Clinton and Kissinger, science is an instrument of foreign policy, whether deployed overtly in winning over current governments or more subtly in shaping the views of future ones. For them, amidst competing interests and simmering tensions, we ignore science’s soft power at our own peril. Just look at China’s distribution over Sinovac COVID-19 vaccines in the pandemic. In October 2020, January 2021 and September 2021, Chinese Foreign Minister Wang Yi went on tours of Southeast Asia, promising vaccine aid while pushing closer connections between China and the rest of Asia. Last year, it was estimated that China had promised a total of over 255 million vaccine doses – a key step in building stronger economic and military ties in an increasingly tense region. Indeed, in mid-2021, just as concerns about Chinese vaccine efficacy grew, US President Joe Biden announced “half [a] billion doses with no strings attached…[no] pressure for favours, or potential concessions” from the sidelines of a G7 Summit. Secretary of Defence Lloyd Austin travelled across Southeast Asia. In the the Philippines he renewed a military deal just as a new shipment of vaccines was announced – a clear indicator of the linkage between medical and military diplomacy, something reinforced when Vice President Kamala Harris landed in Singapore later that year to declare the US “an arsenal of safe and effective vaccines for our entire world.” Australia is key to vaccine diplomacy too. On his visit here earlier this year, US Secretary of State Antony Blinken made a point of visiting the University of Melbourne’s Biomedical Precinct to talk about COVID-19, declaring on Australian television that our nation was central to “looking Image 5: United States Secretary of State Lloyd J Austin III meets with Philippines President Rodrigo Duterte in July 2021 for negotiations on renewing the Visiting Forces Agreement at the problems that afflict our people as well as the opportunities…dealing with COVID…[in] new coalitions [and] new partnerships.” These views are backed up locally too. Sitting down for an exclusive interview with OmniSci Magazine last year, Dr Amanda Caples, Lead Scientist of Victoria, was keen to characterise her work in terms of these developments, reminding us that Victoria had been key to “improving the understanding of the immunology and epidemiology of the virus, developing vaccines and treatments and leading research into the social impact of the pandemic”, and emphasising Australia’s national interest, declaring that “global policymakers understand that a high performing science and research system benefits the broader economy…science and research contribute to jobs and prosperity for all rather than just the few.” Science, it seems, whether in vaccines, trade or exchanges, just like fifty years ago, is again to be a key tool for grand strategy and national interests. Image 6: Dr Amanda Caples, Lead Scientist of Victoria ARGUMENTS AND ARMS But perhaps even this might be too optimistic an outlook – for that simmering balance of power occasionally boils over. We need only to look at what happened when the détente of Nixon and Brezhnev was dashed to pieces with the Soviet invasion of Afghanistan in 1979. The policy was roundly condemned as sheer naïveté in the face of wily adversaries, with President Ronald Reagan later describing détente in a radio address as “what a farmer has with his turkey – until Thanksgiving Day”. Science was the first target for diplomatic attacks. After the invasion, Senator Robert Dole (R-KS) launched legislation barring the National Science Foundation from funding trips to the USSR. And the push seemed bipartisan, with Representative George Brown Jr. (D-CA-36) proposing a House Joint Resolution enacting an immediate “halt [to] official travel related to scientific and technical cooperation with the Soviet Union”. Image 7: Russia’s cosmonauts board the ISS on 18th March 2022, shortly before Russia ends its participation in the program Now, as we face war on the European continent, even the ISS – the descendant of Apollo-Soyuz’s seemingly-apolitical scientific endeavours – seems to be falling apart spectacularly. On April 2 this year, Roscosmos, the Russian space agency, announced that it would be ending its participation in the ISS program, demanding a “full and unconditional removal of…sanctions” imposed over the Russian invasion of Ukraine. Earlier in the year, Roscosmos’ Director General Dmitry Rogozin openly suggested on Twitter that the ISS being without Russian involvement would lead to “an uncontrolled deorbit and fall [of the station] into the United States or Europe”, alluding to “the option of dropping a 500-ton structure [on] India and China.” Rogozin’s threats became even more pronounced as the war continued, with Roscosmos producing a video depicting Russia’s two astronauts on the station not bringing NASA astronaut Mark Vande Hei back to Earth with them (American astronauts primarily go to and return from space via Russian Soyuz capsules). Shared by Russian state news, its chilling final scenes show the Russian segment of the ISS detaching too, with Vande Hei presumably left to die in space aboard the station. Such attacks need not remain rhetorical, either. Scientific advancements have long been tied to weaponry and defence systems, with mathematicians and physicists from John Littlewood to Richard Feynman involved in making bombs and ballistics in times of war. Even Arecibo, that bastion of a united humanity, began life as a Department of Defence initiative detecting Soviet ballistic missiles. Today, the AUKUS defence partnership – one of the most significant Indo-Pacific defence developments in recent memory – centres on sharing nuclear submarine science and technology, promising scientific cooperation regarding “cyber capabilities, artificial intelligence, quantum technologies, and additional undersea capabilities”. Even if induced by factors beyond our control, such weapons-based science is a far cry from the pacifist ideals of the Arecibo message. Thus, perhaps this messy reality is more central to our science than we like to admit. From the ISS to Australia’s waters, science still is intertwined with conflict and frequently co-opted by geopolitical actors in times of renewed aggression. Science at its worst is mere weaponry. But at its best, it speaks to something greater. HOPE IN THE DARKNESS In June 1977, the world was far from diplomatically stagnant. From the rumblings of Middle Eastern peace (what became the Camp David Accords) to new hopes of nuclear arms reduction, US President Jimmy Carter had quite the array of diplomatic dilemmas to consider. But amidst all that cold politics, he penned a letter to be sent on board the spacecraft Voyager, now the furthest manmade object from our solar system, declaring “We are attempting to survive our time so we may live into yours…This record represents our hope and our determination, and our good will in a vast and awesome universe.” And if this magazine has purported to speak to the ‘alien’ – far removed from our human lives - then perhaps we have discovered quite the opposite: that looking out up there is so much about looking in down here. Science presents a way we can look out at the alien and see ourselves – “survive our time…into yours”, finding a path ahead reflected in the inky blackness above. We are often constrained by time and circumstance, forced in the face of nefarious actors to compromise our idealism and use science as a mere weapon or tool. Discovery for discovery’s sake is frequently the first casualty when battle lines are drawn and aggression begun, and too often the political pessimism of the scientist can seem overpowering. But if the stories of broken détentes, diplomatic realpolitik and weaponised technology have made it all feel inevitable, then perhaps it is worth considering the story we began with, looking up into the night sky and remembering that somewhere amidst the stars is a tiny warble in the electromagnetic spectrum. Long after the funds and papers that forged it have faded away, after the people who wrote it have perished, it will continue. In its odd combination of ones and zeroes, it will represent humanity: our contradictions and our fears, our constant foibles and infighting, but also our occasional glimpses of a future beyond them. A signal…a reminder that when the times, the people Image 8: President Jimmy Carter’s message, sent aboard Voyager, the furthest man-made probe from Earth and the ideas line up just right, science can be the torchbearer for something greater. Something so rare that amidst all the ills of the world, it often seems non-existent, and so powerful that over two millennia ago, Aeschylus himself deemed it the very thing given to humanity by Prometheus to save us from destruction – the ideal that transformed us from mortals fixated on ourselves and our deaths to a civilisation capable of great things. “τυφλὰς…ἐλπίδας”, he called it: blind hope. A handshake in a capsule. A life-saving jab on board a ship. A binary message in a bottle, out among the stars. Fleeting images – not of what we are, but of what we can be: visions of blind hope, that sheer belief that we can grow past our worst violent impulses and reach out into the great beyond. Maybe it’s foolish. Maybe it’s naïve. But, on a brisk fall evening, looking out at a sky full of stars, each one more twinkling than the last, it’s easy to stop and imagine…maybe it’s the only thing that matters. Andrew Lim is an Editor and Feature Writer with OmniSci Magazine and led the team behind the Australian Finalist Submission to the New Arecibo Message Challenge. Image Credits (in order): National Atmospheric and Ionosphere Centre; National Aeronautics and Space Administration; National Archives Nixon White House Photo Office Collection; Kith Serey/Pool via Reuters; Malacanang Presidential Photo via Reuters; The Office of the Lead Scientist of Victoria; AP; National Aeronautics and Space Administration Previous article Next article alien back to

< Back to Issue 9 The Cosmos in Our Palms: A Reflection of Our Cosmic Origins by Mishen De Silva 28 October 2025 Illustrated by Heather Sutherland Edited by Nirali Bhagat The Stars and I As I lay down, head held up high, I open my eyes to the Stars and I. In silent dominion, sits the adorned sky, Scattered patterns and celestine fortresses, Locked behind veils of gas, dust and time. Where do I stand, between the Stars and I? Separated by infinities, Yet entranced by familiarity, Perhaps the Stars and I are not as different as I thought. Iron cladded blood, calcium forged bones, carbon cells, Myself, an echo to a stellar memory. What lies between the Stars and I? Long before breath touched my lungs, Fire forged my heart, And light filled my eyes, I was written in the same primordial script, Of matter and light. Seven more lines to which I exist, As a witness and whisper to our shared cosmic thread. A child of the sky, A memory, dreaming of itself, Who am I, but both the Stars and I. The universe first learned to know itself, I second, Where could it have all begun, between the Stars and I? Origins of Cosmic Matter To understand this profound connection between us and the cosmos, we must trace back 13.8 billion years to the birth of matter itself. The complex matter which encapsulates our very existence stems from one crucial cosmic event, the Big Bang (1). In this moment, hydrogen and helium were formed and became the building blocks to the universe. In the early stages of our universe forming, seas of hydrogen and helium gas were pulled by gravity to create stars, in an event known as gravitational collapse (2). These stars became the furnaces for existence. As spheres of fire, they fused atoms together to create more complex ones. This is known as stellar nucleosynthesis, where stars form heavier elements, such as carbon, calcium, nitrogen, oxygen and iron, through the nuclear fusion of hydrogen and helium (3). As time goes on, the core of a star collapses in on itself, creating a supernova. A supernova is an explosion of unimaginable heat, which is crucial in forming all the elements heavier than iron (1). In its lifetime, a star transmutes what was once darkness and barren, into a seed of complex matter. In death, they scatter the elements of their creation across the cosmos, planting them in vast fields of space, from which new stars ignite, planets take form, and life may slowly emerge (3). Through this, we can begin to appreciate our existence as something far greater than ourselves, where the iron in our blood, calcium in our bones and carbon in our cells were all created long before Earth even existed. Life on Earth As the clouds of gas and dust from countless stellar generations drift through the galaxy, they soon clump together to form planetesimals, in a process known as accretion (4). Planetesimals are small, icy and rocky cosmic bodies, which collide together to form planets (4). The planetesimals which collided and merged to form a young Earth made an environment rich with the ingredients to create life. Over eons, elements such as carbon, hydrogen, nitrogen, oxygen, and phosphorus have worked together to create the complex chemistries we see on Earth (5). The same elements, once inside stars, became crucial hallmarks for organic life: carbon forms the backbone of DNA and protein, nitrogen is essential for amino acids, oxygen supports respiration, and phosphorus forms our energy molecules, ATP (6). In this way, every organism before us, from microscopic bacteria, to the fleeting fruit fly, across the vastness of a whale, to the depth of a human soul, were all forged in the fire of the stars. As we detangle the web of our cosmic origins, we can begin to view our existence not only as entwined with every being around us, but also a direct continuation of the cosmos and its evolution. Figure 1. Elements found in stars which make up our body (7) The Cycle of Return It is important to recognise that this cosmic history does not end with us. Matter and energy are never lost, only transformed to take on new forms. An example of this is the carbon cycle, where carbon atoms are continuously moving and taking on new forms in the atmosphere, land and oceans (8). Through death and decay, in between birth and being, our physical selves become part of the soil, water and air, being reused by plants and other organisms to create new biological cycles (9). Similar to the impermanence of our existence, the Earth too will not last forever. Just like any star, our Sun will eventually exhaust the hydrogen in its core, swelling into a giant inferno consuming our world with it (10). However, this is not the end we think it is. Over eons, through supernovae and stellar collisions, the elements to our origins of life will be scattered across different depths of space, perhaps forming new stars, planets or even life elsewhere (11). Figure 2. The Carbon Cycle (12) In the present, each organism, cell and breath of life, exists as an homage to the universe’s constant transformation and reorganisation into new forms. With each howl of a dog, cry of a baby and rustle of a tree, we all exist under a profound and truly out of this world connection. A part of a much bigger cycle, the matter which formed the stars, which created the elements giving rise to life on Earth, will one day become something new again. And so, the more we examine this complex cycle, the more we can dissolve the distance between the “Stars and I”. We were never separate from the stars, and the cosmos is no longer just ‘out there’; it is something within us, around us, and inextricably mixed with who we fundamentally are. References Muhammad, T. Why We’re All Made of Star Dust. Science News Today [Internet]. 2025 May [cited 2025 Oct 8]. Available from: https://www.sciencenewstoday.org/why-were-all-made-of-star-dust Lineweaver, C.H., Egan, C.A. Life, gravity and the second law of thermodynamics. Physics of Life Reviews. 2008;5(4): 225–242. doi: 10.1016/j.plrev.2008.08.002 Fox, R. F. Origin of Life and Energy. Encyclopedia of Energy . 2004:781–792. doi: 10.1016/b0-12-176480-x/00054-1 Halliday, A. N., Canup, R. M. The accretion of planet Earth. Nature Reviews Earth & Environment . 2022;4:1–17. doi: 10.1038/s43017-022-00370-0 The origin of life: The conditions that sparked life on Earth. Research Outreach [Internet]. 2019 Dec [cited 2025 Oct 8]. Available from: https://researchoutreach.org/articles/origin-life-conditions-sparked-life-earth/ Remick, K. A., Helmann, J. D. The elements of life: A biocentric tour of the periodic table. Advances in Microbial Physiology. 2023;82:1–127. doi: 10.1016/bs.ampbs.2022.11.001 Lotzof, K. Are we really made of stardust? Natural History Museum [Internet]. [cited 2025 Oct 8]. Available from: https://www.nhm.ac.uk/discover/are-we-really-made-of-stardust.html Pulselli, F. M. Global Warming Potential and the Net Carbon Balance. Encyclopedia of Ecology. 2008:1741–1746. doi: /10.1016/b978-008045405-4.00112-9 Huang, T., Hu, Q., Shen, Y., Anglés, A., Fernández-Remolar, D. C. Biogeochemical Cycles. Encyclopedia of Biodiversity. 2024;6:393–407. doi: 10.1016/b978-0-12-822562-2.00347-9 Staff, A. What will happen to the planets when the Sun becomes a red giant? Astronomy Magazine [Internet]. 2020 Sep [cited 2025 Oct 8]. Available from: https://www.astronomy.com/observing/what-will-happen-to-the-planets-when-the-sun-becomes-a-red-giant/ Betz, E. How will life on Earth end? Astronomy Magazine [Internet]. 2023 Aug [cited 2025 Oct 8]. Available from: https://www.astronomy.com/science/how-will-life-on-earth-end/ Sultan, H., Li, Y., Ahmed, W., Shah, A., Faizan, M., Ahmad, A., Nie, L., Yixue, M., & Khan, M. N. (2024). Biochar and nano biochar: Enhancing salt resilience in plants and soil while mitigating greenhouse gas emissions: A comprehensive review. Journal of Environmental Management. 2024; 355 :120448–120448. doi: 10.1016/j.jenvman.2024.120448 Previous article Next article Entwined back to

< Back to Issue 8 Thinking Outside the Body: The Consciousness of Slime Moulds by Jessica Walton 3 June 2025 Edited by Han Chong Illustrated by Ashlee Yeo Imagine yourself as an urban planner for Tokyo’s public transport system in 1927. Imagine mapping out the most efficient paths through dense urban sprawl, around obstructing rivers and mountains. And imagine meticulously designing the most efficient possible model, after years of study and expertise… only to find your design prowess, 83 years later, matched by a slime mould: a creature with no eyes, no head nor limbs, nor nervous system. Of course, this is anachronistic. For one, the Tokyo railroad system developed over time, not all at once. But it was designed to meet the needs of the city and maximise efficiency. Yet in 2010, when researchers exposed the slime mould Physarum polycephalum to a plate mimicking Tokyo city (with population density represented by oat flakes) it almost exactly mimicked the Tokyo railroad system (1). This became one of the most iconic slime mould experiments, ushering in a flood of research about biological urban design asking the question: Could a slime mould, or other similar organisms, map out human cities for us? But a slime mould doesn’t know what cities are. They’re single-celled organisms; they don’t understand urban planning, or public transport, or humans. They are classified as protists, largely because we’re not sure how else to categorise them, not because they’re particularly ‘protist-y.’ They have no brain and are single-celled for most of their life; so they can’t plan routes, have preferences, or make memories. Right? Except, perhaps they can. Slime moulds are extremely well-studied organisms because they exhibit precisely these behaviours. But how do they think? And what does it mean— to think ? Slime moulds have evidenced memory and learning. The protoplasm network they form is really just one huge cell that eventually develops into a plasmodium, growing and releasing spores. While plasmodial slime moulds (like P. polycephalum ) do this during reproduction, cellular slime moulds (dictyostelids) are able to aggregate together into one cell like this when food is scarce or environments are difficult (meaning they must be able to detect and evaluate if these things are true). Most slime mould behaviour is understood through cell signalling and extracellular interaction mechanisms; responding to chemical gradients using receptors along their membrane, which signal to the cells to move up the concentration gradient of a chemoattractant molecule and away from a chemorepellent. This makes sense; bacteria (like almost every other living organism) do this all the time and it’s the chief way that they make decisions . But what about memory and preferences? What about stimuli beyond the immediate detected chemicals? Slime moulds can, for example, anticipate repeated events and avoid simple traps to reach food hidden behind a U-shaped barrier (2,3). These are beyond input-to-output; something more complex must be happening. Something conscious? Thinking ? The idea of consciousness requiring complex neuronal processes is becoming rapidly outdated as we observe patterns of thinking in organisms that, according to classical definitions, really should not be able to. Using the slime mould as an example, Sims and Kiverstein (2022) argue against the ‘neurocentric’ assumption that an organism must have a brain to be cognisant. Instead, P. polycephalum is suggested to exhibit spatial memory, with cognition being suggested to sometimes include external elements (3). They showed it may undergo simple, habitual learning and hypothesised it uses an oscillation-based mechanism within the cell (3). Similarly, oscillator units along the slime mould’s extending tendrils oscillate at a higher frequency at higher concentrations of food source molecules (like some tasty glucose), signalling to the slime mould to move in that direction (4). Sims and Kiverstein (2022) also posit that the slime trail left by slime mould could function as an external memory mechanism. They found that P. polycephalum avoids slime trails as they represent places it has already been; suggesting a method of spatial memory (4). This was further proved as not a pure input-output response by showing that the avoidance response could be overridden when food is placed on or near slime trails (5). They suggest that the slime mould was able to balance multiple inputs, including oscillation levels and slime trail signals, exhibiting simple decision-making. Should we count these processes as thinking ? This topic is debated by philosophers as much as biologists. Sims and Kiverstein (2022) use the Hypothesis of Extended Cognition, being that mind sometimes extends into the environment outside of the brain and body, to argue firmly that it does count. But at the end of the day, despite understanding the chemical and electrical processes between neurons signalling and the cellular makeup of the brain, we still don’t understand how electrical signals through a series of axons make the leap to complex consciousness. Rudimentary and external cognition pathways, as seen with the slime mould, may also be an evolutionary link in the building blocks to more complex, nerve-based consciousness and decision making (3). We don’t yet understand the phenomena inside our own skulls—how can we hope to define it across all other organisms? Slime moulds clearly have something beyond simple chemical reactions. This begs the question: Aren't our own minds also fundamentally just made of simple chemical reactions? And if a slime mould is able to evaluate multiple inputs, how wonderfully complex must such processes be inside (and outside) a sea anemone, a cockroach or a cat? There’s no way to know what such a consciousness would look like or feel like to our frame of reference. When a slime mould, moving as a network around an agar plate, ‘looks up’ (or an equivalent slime mould action) and perceives unfathomable entities, how does it process that? What does the slime mould think of us? Bibliography 1. Kay R, Mattacchione A, Katrycz C, Hatton BD. Stepwise slime mould growth as a template for urban design. Sci Rep. 2022 Jan 25;12(1):1322. 2. Saigusa T, Tero A, Nakagaki T, Kuramoto Y. Amoebae Anticipate Periodic Events. Phys Rev Lett. 2008 Jan 3;100(1):018101. 3. Sims M, Kiverstein J. Externalized memory in slime mould and the extended (non-neuronal) mind. Cognitive Systems Research. 2022 Jun 1;73:26–35. 4. Reid CR, Latty T, Dussutour A, Beekman M. Slime mold uses an externalized spatial “memory” to navigate in complex environments. Proc Natl Acad Sci U S A. 2012 Oct 23;109(43):17490–4. 5. Reid CR, Beekman M, Latty T, Dussutour A. Amoeboid organism uses extracellular secretions to make smart foraging decisions. Behavioral Ecology. 2013 Jul;24(4):812–8. Previous article Next article Enigma back to

< Back to Issue 6 Fire and Brimstone by Jesse Allen 28 May 2024 Edited by Sakura Kojima Illustrated by Aisyah Mohammad Sulhanuddin CW: references to death, religion The year is 1783, and it seems that the end is nigh – at least, that is the impression of Icelandic priest Jón Steingrímsson. His diary offers a striking firsthand account of a fissure eruption which would last around eight months and claim the lives of approximately 9,000 people. These events are characterised by the emergence of molten magma through a crack in the Earth’s crust; and though they might lack the dramatic, Vesuvian spectacle of a typical volcanic eruption, they can be no less devastating (Witt et al., 2018). Steingrímsson recounts how “the ground swelled up with tremendous howling” before “flames and fire erupted” and sent “great blocks of rock and pieces of grass…high into the air”. There could only be one explanation for such apocalyptic scenes: these were surely “the signs of an angry god” (Bressan, 2013). In a last-ditch effort to save the local populace from this act of divine wrath, Steingrímsson held a church service in the town of Kirkjubæjarklaustur – which the relentless magma threatened to engulf – in which he urged repentance and led feverish prayers for mercy. It has gone down in Icelandic folklore as the Eldmessa , or ‘fire mass’ (Andrews, 2018). Since October 2023, Iceland’s Reykjanes Peninsula has been beset with an intense new wave of seismic activity and fissure eruptions (Andrews, 2024). In these ‘rift zones,’ magma can seep upwards through splits in the Earth’s crust towards the surface, forming large dikes and potentially creating multiple vents from which lava fountains can occur (Witt et al., 2018). At the time of writing, the situation has been declared stable by the Icelandic Met Office. But after centuries of dormancy, it has made the extraordinary power residing beneath the surface of our planet abundantly clear to local and international observers alike. It might seem that people are helpless in the face of such raw, elemental forces; all we can do is hope and pray. Yet, thanks to the tireless work of local authorities and dedicated scientists, it has become possible to decode the previously ineffable language of the fiery interior – and save lives in the process (Andrews, 2024). At the heart of this effort lies the Interferometric Synthetic Aperture Radar (InSAR), which enables scientists to map surface deformations and, hence, to infer magma movements (Tolpekin, 2023). This imaging technique records the backscatter of microwave signals as they ‘bounce’ off the surface (European Space Agency, n.d.). When two images are taken of the same location at different times – and then aligned pixel by pixel – the level of deformation can be represented with an interferogram, which functions like a brightly coloured topographic map (NASA, n.d.). This technology has major implications for planning authorities (Ducrocq et al., 2024). The increased frequency and intensity of tremors that began late last year, for instance, heralded the possibility of an imminent eruption. In conjunction with Iceland’s network of over 50 seismographs – ground-based devices which detect movement in all directions – InSAR provided the early warning on November 10 (Icelandic Met Office, n.d.). Beyond measuring the deformation magnitude (around 50 centimetres), scans also showed the localised area that was most likely to be affected, around the town of Grindavik. A state of emergency was declared by the Icelandic government on November 12, and the town was subsequently evacuated. The Reykjanes fissure first erupted in December and has done so three more times since then, as of 19th March 2024 (Baker, 2024). Having lain dormant for centuries, the peninsula could now face decades, even centuries, of heightened volcanic activity (Andrews, 2024). Situated on the ridge between the North American and Eurasian tectonic plates, Iceland has long been a hotbed for geologists and other scientists; the most recent eruptions will continue to foster a deeper knowledge of the primordial forces at work beneath the crust. Even technology such as InSAR cannot flawlessly predict where the next fissure will occur, with the systems at work simply too complex and subject to unpredictable changes, nor does it offer the opportunity to tame these forces. But forewarned is forearmed: the lives that have already been saved illuminate the role of scientific understanding as a force for overcoming our powerlessness in the face of the elements. The fury of heaven, as Steingrímsson would surely have it. References Andrews, R.G. (2024, February 20). Inside Scientists’ Life-Saving Prediction of the Iceland Eruption. Quanta Magazine . https://www.quantamagazine.org/inside-scientists-life-saving-prediction-of-the-iceland-eruption-20240220/ Andrews, R.G. (2018, April 4). The Legend of The Icelandic Pastor Who Appeared To Stop A Lava Flow. Forbes . https://www.forbes.com/sites/robinandrews/2018/04/24/the-legend-of-the-icelandic-pastor-who-appeared-to-stop-a-lava-flow/?sh=703ae4301798 Baker, H. (2024, March 19). Iceland volcano: 'Most powerful' eruption yet narrowly misses Grindavik but could still trigger life-threatening toxic gas plume . Live Science. https://www.livescience.com/planet-earth/volcanos/iceland-volcano-most-powerful-eruption-yet-narrowly-misses-grindavik-but-could-still-trigger-life-threatening-toxic-gas-plume Bressan, D. (2013, June 8). June 8, 1783: How the “Laki-eruptions” changed History . Scientific American. https://www.scientificamerican.com/blog/history-of-geology/8-june-1783-how-the-laki-eruptions-changed-history/ Ducrocq, C., Arnadottir, T., Einarsson, P., Jonsson, s., Drouin, V., Geirsson, H., & Hjartadottir, A.R. (2024). Widespread fracture movements during a volcano-tectonic unrest: the Reykjanes Peninsula, Iceland, from 2019-2021 TerraSAR-X intereferometry. Bulletin of Volcanology , 86 (14). https://doi.org/10.1007/s00445-023-01699-0 European Space Agency (n.d.). How does interferometry work? https://www.esa.int/Applications/Observing_the_Earth/How_does_interferometry_work Icelandic Met Office (n.d.). 100 Years of Seismic Observations . https://en.vedur.is/earthquakes-and-volcanism/conferences/jsr-2009/100_years/ NASA (n.d.). Interferometry . https://nisar.jpl.nasa.gov/mission/get-to-know-sar/interferometry/#:~:text=Interferometry%20is%20an%20imaging%20technique,reveal%20surface%20motion%20and%20change . Tolpekin, V. (2023, November 17). ICEYE Interferometric Analysis: Monitoring Potential Volcanic Eruption in Iceland . ICEYE. https://www.iceye.com/blog/iceye-interferometric-analysis-monitoring-potential-volcanic-eruption-in-iceland Witt, T., Walter, R.T., Muller, D., Gudmundsson, M.T., & Schopa, A. (2018). The relationship between lava fountaing and vent morphology for the 2014-2015 Holuhraun eruption, Iceland, analysed by video monitoring and topographic mapping. Frontiers in Earth Science , 6. https://doi.org/10.3389/feart.2018.00235 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