Australia's Sharks are Shifting South on Warming Seas, and so Is the Risk - Lethal Heating Editor BDA

Warming seas are pushing predatory sharks into new Australian waters

Key Points

The East Australian Current's acceleration is pushing tropical sharks hundreds of kilometres south.[1] Bull sharks now hold favourable habitat off New South Wales for months longer than in the past.[5] Rising metabolic demands are driving sharks to forage more aggressively near shore.[6] New South Wales has expanded drone and SMART drumline technology to adapt to shifting shark presence.[9]

Ballina surfer Grace Owens felt the shift long before scientists confirmed it publicly. 

Warmer water lingered off the Northern Rivers coastline into late April, weeks past its usual seasonal retreat. 

Bull sharks stayed in the lineup long after the summer holiday crowds had already left, unsettling longtime locals.

Her account matches a wider pattern now documented by marine scientists along the southeastern coast. 

Climate change is measurably reshaping shark distribution, seasonal timing and hunting behaviour across eastern Australia. 

Researchers say rising human encounters are becoming an unavoidable consequence, one carrying implications for governance and coastal communities.

Ocean Warming and the Southward Push

The East Australian Current is accelerating steadily under sustained global warming pressures each decade. It pushes warmer tropical water further south along the continental shelf, reshaping long standing thermal boundaries. Tropical shark species are following this strengthening marine highway into historically cooler temperate waters.^[1]

Bull sharks and tiger sharks increasingly hold established territory in waters near Sydney and southern New South Wales. Populations once confined largely to subtropical Queensland waters now persist through entire winter seasons. Researchers link this behavioural shift directly to the accelerating strength of the warming current.^[2]

White shark nurseries face a parallel transformation as coastal waters continue warming rapidly each decade. The long established Port Stephens nursery may lose significant thermal suitability within coming decades. Victorian waters near Corner Inlet and the Twofold Shelf could gain new suitability instead.^[3]

CSIRO tagging studies confirm juvenile white sharks consistently favour specific coastal travel corridors each year. These corridors run along the continental shelf between Port Stephens and eastern Victoria, tracing water depths favoured by young sharks. Shifting ocean temperatures could redraw these long established corridors within a single generation.^[4]

Shifting Seasons and Migration Timing

Warming waters are steadily extending bull shark residency along the entire southeastern Australian coast. Favourable temperatures above twenty two degrees now persist across New South Wales for months longer than before. Researchers predict three additional months of suitable habitat availability by the year 2030.^[1]

Winter migration triggers are steadily weakening as southern coastal waters retain summer heat longer each year. Sharks that once reliably fled north each autumn are now lingering later into the season. Acoustic tracking networks confirm many individuals are delaying their traditional equatorward journeys considerably.^[5]

Phenological mismatches are emerging steadily between resident sharks and their traditional migratory prey species. Baitfish schools now arrive earlier in the season than established shark migration patterns anticipate, disrupting long standing ecological timing. This growing timing gap forces predators to adjust their foraging strategies rapidly and unpredictably.^[5]

Some historically transient shark species may now overwinter permanently within southeastern estuaries and sheltered inlets. Warmer estuarine refuges reduce the biological incentive for undertaking long distance seasonal travel altogether. Extended year round residency raises the statistical odds of encounters with recreational water users.^[5]

Behavioural and Foraging Adaptations

Rising ocean temperatures accelerate metabolic rates significantly among ectothermic, cold blooded shark species. Faster metabolism forces sharks to hunt more frequently and more aggressively within busy coastal zones. Increased foraging frequency consistently brings hungry predators closer to popular swimming beaches during warmer months.^[6]

Baitfish, tuna and marine mammal populations are steadily relocating as coastal waters continue warming. Sharks are tracking these moving food sources ever closer toward the immediate coastline, altering long established hunting grounds. Acoustic monitoring networks now reveal predators consistently shadowing displaced prey into shallow bays.^[5]

Heavy rainfall events are steadily reshaping how juvenile bull sharks utilise southeastern river systems and estuaries. Flooded waterways displace prey species into unfamiliar shallow channels near heavily populated residential areas. Nutrient rich runoff draws hungry baitfish into these channels, and bull sharks follow closely behind.^[7]

Marine heatwaves trigger acute, short term behavioural shifts among coastal apex predators along both major coastlines. Warm water species linger longer while established resident species retreat toward cooler southern refuges. Tasmanian waters increasingly host warm water visitors once confined almost entirely to mainland shores.^[8]

Factors Driving Human Encounters

Peak seasonal shark presence increasingly overlaps directly with crowded holiday beach seasons across the southeast. Warmer waters draw sharks progressively south during the very same extended months families gather to swim. This growing overlap concentrates encounter risk during the busiest recreational periods of the year.^[7]

Extreme weather events and shifting baitfish schools are steadily pulling large sharks toward the immediate shoreline. Record breaking rainfall has repeatedly flushed sewage and organic debris into nearby coastal waters. This nutrient surge attracts baitfish, and predators inevitably follow them into busy surf zones.^[7]

Sharks are spending progressively longer seasons within coastal estuaries, harbours and sheltered tidal inlets. These same busy waterways host swimmers, paddlers and recreational anglers throughout the warmer summer months. Extended seasonal overlap steadily raises the statistical chance of unexpected encounters occurring nearby.^[5]

Flooding events regularly cloud coastal waters with sediment, silt and turbid agricultural runoff. Reduced underwater visibility makes it considerably harder for sharks to correctly identify people nearby in the surf. Analysts increasingly consider this a genuine and measurable contributor toward accidental predatory encounters.^[7]

Ecological and Governance Implications

Cold water adapted and warm water adapted apex predators increasingly share the very same coastal range. This growing overlap intensifies direct competition for already dwindling temperate marine prey resources. Vulnerable cool water shark and ray species now face displacement toward marginal, less productive habitat further out from shore.^[2]

New South Wales has substantially expanded drone patrols and SMART drumline coverage in direct response. Over three hundred drumlines now operate daily across nineteen separate local government areas. Officials describe this as the largest and most comprehensive shark mitigation program anywhere in the world.^[9]

Commercial and recreational fisheries face growing uncertainty as target species shift steadily beyond historical management boundaries. Quota systems built around outdated historical ranges risk becoming rapidly and expensively misaligned with reality. Adaptive, climate informed management remains essential for both shark conservation and fishing industry stability.^[2]

Shark driven trophic cascades help actively protect valuable kelp forests from destructive sea urchin overgrazing. Intensifying marine heatwaves threaten this delicate ecological balance across southern Australian reef systems, from Tasmania to Victoria. Losing apex predators from these systems could rapidly accelerate the collapse of critical kelp habitat.^[10]

Climate change is fundamentally reshaping shark ecology along Australia's entire southeastern seaboard. Warmer currents, altered breeding seasons and shifting prey distributions are converging simultaneously across the region. The consequences extend across marine ecosystems, coastal fisheries and everyday public safety.

Government agencies have expanded surveillance, tagging and drone technology considerably in response to these changes. Yet management frameworks still remain largely reactive rather than genuinely anticipatory of future shifts. Long term coastal planning must treat this as permanent structural change rather than a passing seasonal anomaly.

Accountability requires transparent data collection and sustained investment extending well beyond single summer funding cycles. Coastal communities deserve dedicated funding tied directly to credible long term climate projections and evidence. Australia's shark management system must evolve as quickly and deliberately as the ocean around it.

References

1. Predicting changes in distribution of a large coastal shark in the face of the strengthening East Australian Current. Marine Ecology Progress Series modelling shows bull sharks gaining months of suitable NSW habitat as the current strengthens.

2. Global warming to reshape Australian shark and ray populations and raise extinction risk. Australian Marine Conservation Society outlines how a strengthening current pushes tropical species south into competition with temperate residents.

3. Seasonal changes in the habitat suitability of immature white sharks driven by ocean warming. ICES Journal of Marine Science research projects shifting suitability between the Stockton and Twofold Shelf white shark nurseries.

4. White shark research findings. CSIRO tagging identifies juvenile white shark nursery corridors along the New South Wales and Victorian coastlines.

5. Ocean warming increases residency at summering grounds for migrating bull sharks. Science of the Total Environment documents extended bull shark residency linked to accelerated warming in southeastern Australia.

6. Future Distribution of Suitable Habitat for Pelagic Sharks in Australia Under Climate Change Models. Frontiers in Marine Science reviews evidence that elevated temperatures raise shark metabolic and foraging demands.

7. Sharks aren't turning on us, so what's behind the recent spate of attacks. Euronews reports how flooding, runoff and displaced baitfish drew bull sharks toward populated New South Wales beaches.

8. Marine Heatwaves. Fishing Tasmania details how intensifying marine heatwaves are drawing warm water species further into Tasmanian waters.

9. Current Program. The NSW Government describes the Shark Management Program, including SMART drumlines, drones and listening stations.

10. Marine Protected Areas That Preserve Trophic Cascades Promote Resilience of Kelp Forests to Marine Heatwaves. This peer reviewed study shows predator driven trophic cascades help kelp forests withstand marine heatwave disturbance.

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Global warming already causing crop losses of over $20 billion a year - New Scientist

New Scientist - Michael Le Page

Climate change is already having a big impact on crop yields, and the
subsequent financial losses will continue to rise as the world keeps warming

The economies of countries where many people work in farming will be hit the hardest. Imago/Alamy

Global warming-fuelled heat and drought is already hitting yields of maize, wheat and soybeans to the tune of $20 billion a year, a study has estimated. 

This could rise eightfold, to more than $160 billion by 2100, unless we slash emissions.

While the financial losses will be greatest for big producers such as the US, the impacts will be felt most in the lowest-income countries, where the majority of the population works in farming, says Yi Ling Hwong at the International Institute for Applied Systems Analysis (IIASA) in Austria. “If you look at the least-developed countries in Africa, the impact is much bigger.” 

This could lead to social unrest and increased migration, she warns.

There is great uncertainty about these kinds of projections, not least because so much depends on how farmers respond and adapt to a continually changing climate, for instance, by switching to different crops or adopting irrigation where it is possible. 

In fact, the whole point of this study is to raise awareness and encourage adaptation, to help ensure these projections turn out to be overestimates, says team member Kai Kornhuber, also at IIASA. “This is the entire mission of climate scientists: we make these cases for people to react, so our projections turn out to be wrong.”

The researchers started by gathering data on the yields per country of maize, wheat and soya from the UN Food and Agriculture Organization (FAO). Next, they took past climate data and calculated the drought level, using a standard approach that estimates soil moisture levels from rainfall and evaporation levels.

Past heat extremes and drought levels were then compared with the yields from 1974 to 2004 to estimate the impact of heat and drought. They then used these statistical correlations to estimate crop losses from 2007 to 2019. 

Their results suggest that increases in heat extremes and drought have caused a 3.5 per cent decline in yields relative to the 1974 to 2004 baseline. “Three per cent or so might not sound like much, but this is a major impact [on] the global food market, which regionally can trigger a severe crisis,” says Kornhuber.

The researchers then calculated the economic losses, based on FAO data showing how much farmers would have been paid for their produce at the time. Finally, they used the same approach to project future losses in several different emissions scenarios, assuming that some adaptation takes place.

In a high-emissions scenario, known as SSP3-7.0, global yields will fall by around 35 per cent by 2100, with annual losses rising to more than $161 billion. “The production losses caused by heat and drought are around 855 million tonnes a year,” says Hwong, who presented the results at a meeting of the European Geosciences Union in Vienna in May. “I think that is equivalent to what around 2 billion people consume over a year.”

This could be an underestimate of the full impact of climate change for a number of reasons: it’s just three crops, and it doesn’t include flood, storm or rain damage, or the possibility that shortages could lead to big price increases, as is already happening with some other crops such as coffee and cacao.

Jonas Jägermeyr at Columbia University in New York says the study’s reliance on the statistical relationships between yield losses and extreme heat and drought could result in it overestimating the impacts by 2100. “Statistical yield models are great for explaining what’s happening now, and in the near past [or] future, but they are inherently unreliable when pushed into vastly different environmental regimes, such as high-emission climate scenarios by the end of the century.” 

Computer models of how plants are affected by rising CO2 and temperatures are better for projecting what will happen by the end of the century, he says.

Karine Chenu at the University of Queensland, Australia, makes the same point. “Although models are not perfect, they are better suited for this type of extrapolation.” 

However, her team recently released a study, which hasn’t been peer-reviewed, showing that two widely used models for wheat make large errors and are especially poor at forecasting the combined effects of extreme heat and drought.

But Kornhuber has defended his team’s use of statistical methods. “The models are remarkable tools, but some of the validation papers have suggested that they might not be super responsive to extremes,” he says. “In our project, extremes were the main focus, so we decided to establish these relationships directly through statistics.”

Links

• EGU General Assembly 2026 DOI: 10.5194/egusphere-egu26-8148 
• The jet stream may be starting to shift in response to climate change  
• A key solution to climate change isn't happening – and that's good 
• Removing CO2 from the atmosphere by capturing the carbon from burning biomass is supposed to save the planet, but it looks like the flagship project will never happen

Growing Up In The Heat: The Hidden Climate Crisis Shaping Australian Childhoods - Lethal Heating Editor BDA

Australian children are already living inside a 
climate emergency adults still describe as future risk

Key Points

Australian children increasingly experience climate harm that remains largely peripheral in national policy debates 1 Extreme heat is emerging as a major threat to pregnancy, childhood health, and educational outcomes 2 Bushfire smoke exposure may shape respiratory health across an entire generation 3 Repeated disasters are producing long-term psychological and social consequences for young Australians 4 Climate disruption increasingly deepens existing inequality across housing, health, and education 5 Governments continue evaluating climate policy without systematically measuring children's future losses 6

By mid-morning the asphalt outside the school playground had begun to soften.

Teachers ushered students indoors before lunch. Metal handrails burned small palms. A Year 4 teacher lowered blinds against the glare while ageing air-conditioners struggled through another day above 40 degrees.

Few children understood the atmospheric forces driving the heat. Most understood the sensation.

The headache. The fatigue. The sudden stillness that settles over a school when outdoor play becomes unsafe.

Australia's climate debate still revolves around emissions targets, energy markets and infrastructure investment. Children rarely occupy the centre of the frame.

Yet they are among the people most exposed to its consequences.

The Missing Subject In Climate Policy

One of the most striking features of Australia's climate debate is not what appears in policy documents. It is who disappears from them.

Government climate assessments routinely calculate economic losses, infrastructure damage and agricultural risk. Far fewer systematically track childhood exposure to heat, smoke, educational disruption or psychological trauma.

UNICEF Australia estimates around 1.4 million Australian children experience a climate disaster or extreme weather event during an average year.¹

That figure is extraordinary. If 1.4 million children experienced a comparable infectious disease outbreak each year, the issue would dominate cabinet meetings and nightly news bulletins.

Instead climate impacts arrive incrementally. A flooded school here. Weeks of smoke there. A cancelled sporting season. Another heatwave.

The injuries accumulate quietly across childhood.

Before Birth

Some climate effects begin before children take their first breath.

International and Australian research increasingly links prolonged heat exposure during pregnancy to higher risks of premature birth, low birth weight and pregnancy complications.²

Obstetricians describe heat as a physiological stressor. Maternal dehydration, cardiovascular strain and reduced placental function can affect fetal development.

The burden is unlikely to fall evenly.

Women in poorly insulated housing, regional communities and low-income households often face greater exposure. Air-conditioning remains one of Australia's most effective heat adaptation tools. It is also becoming more expensive to run.

Public health systems monitor birth outcomes. Far fewer programmes systematically track climate-linked pregnancy risks.

The result is a growing blind spot.

Children may be entering the world already shaped by environmental conditions largely absent from climate planning.

The Bodies Of Children Respond Differently

Children regulate temperature less efficiently than adults.

They sweat differently. They dehydrate more quickly. Infants possess particularly limited capacity to cool themselves during extreme heat.

Those physiological realities collide with a built environment designed for another climate.

Many Australian schools were constructed before current heat extremes became common. Portable classrooms often become especially difficult during prolonged heatwaves.

Teachers across western Sydney, northern Victoria and regional Queensland increasingly report reduced concentration, behavioural difficulties and exhaustion during extreme heat events.²

Heat affects sleep. Poor sleep affects memory. Learning losses emerge gradually.

No dramatic moment signals the damage.

A child simply absorbs less information across hundreds of overheated school days.

The Smoke Years

During Black Summer the air itself became a public health emergency.

Smoke drifted across eastern Australia for months. Sydney, Canberra and Melbourne recorded pollution levels that health experts described as unprecedented.³

Around 10 million Australians were exposed to hazardous bushfire smoke during the crisis.⁷

Children occupied a particularly vulnerable position.

Their lungs were still developing. Their respiratory rates were higher than adults. Many spent weeks breathing polluted air despite school closures and public health warnings.

Researchers continue investigating the long-term consequences. Evidence already suggests repeated smoke exposure may worsen respiratory illness and contribute to chronic health problems across childhood.⁸

The smoke infiltrated ordinary life.

Children stopped playing outdoors. Sports carnivals disappeared. Families sealed windows with tape. Air purifiers sold out across major cities.

The experience left marks beyond lung tissue.

Growing Up Inside Repeated Disaster

Psychologists increasingly distinguish climate anxiety from conventional anxiety disorders.

The fear is not always irrational. Often it reflects accurate assessment.

A teenager who has experienced bushfires, floods and record heatwaves may not imagine future disruption. They have already lived through it.

Research worldwide shows climate disasters can contribute to post-traumatic stress, depression and prolonged psychological distress among children and adolescents.⁴

Australian clinicians report similar concerns after Black Summer and the catastrophic floods that followed.

Trauma rarely ends when floodwaters recede.

Children return to damaged schools. Parents confront insurance disputes. Communities fracture under financial strain.

Years later some young people still describe anxiety during hot windy afternoons.

The weather becomes a trigger.

The Education System Under Climate Stress

Layla Wang was preparing for her final years of schooling when climate disasters repeatedly interrupted education in the New South Wales South Coast region.

Bushfires arrived first. Floods followed later.⁹

Her experience is becoming less unusual.

School closures linked to bushfires, floods and extreme heat increasingly affect students across regional Australia.

The educational consequences extend beyond missed days.

Disrupted learning can affect examination performance, school completion rates and eventually lifetime earnings. Deloitte modelling for UNICEF Australia projects substantial long-term economic losses associated with disaster-related educational disruption among children and young people.⁶

Regional students often face greater vulnerability because climate hazards and infrastructure limitations intersect.

The same storm that damages homes may also isolate schools and disrupt internet access.

Climate Change As An Inequality Multiplier

Climate impacts rarely arrive on equal terms.

A child sleeping in an insulated home with solar panels experiences heat differently from a child in overcrowded housing with limited cooling.

Housing quality increasingly functions as a health determinant.

Indigenous communities, remote settlements and lower-income households frequently confront greater exposure to climate hazards while possessing fewer resources for recovery.⁵

Children with disabilities face additional challenges during evacuations, service disruptions and prolonged emergencies.

Climate change often amplifies disadvantages already present.

The danger is not merely immediate harm.

Repeated disruption can harden inequality across generations, affecting educational achievement, health outcomes and future economic opportunity.

The Economics Of A Lost Childhood

Australian climate policy still evaluates many decisions through economic frameworks built around present-day costs.

Children complicate that accounting.

How should governments value diminished lung capacity at age eight, interrupted schooling at fourteen or chronic anxiety carried into adulthood?

Deloitte estimates climate-related disasters already impose billions of dollars in annual costs on Australian children and young people, with future costs expected to rise significantly under higher warming scenarios.⁶

Many losses remain difficult to quantify.

No spreadsheet easily captures the value of a stable childhood.

Yet governments make implicit calculations every time climate risks are discounted against short-term economic priorities.

Future burdens are real even when they remain absent from budget papers.

What Accountability Would Look Like

Australian governments have received warnings about climate risks to children for years.

Medical colleges, public health researchers, disaster experts and international agencies have repeatedly identified young people as one of the most vulnerable populations.¹⁰

The deeper question concerns political responsibility.

Should major fossil fuel projects require formal assessments of impacts on future generations?

Should climate adaptation funding be evaluated according to child wellbeing rather than infrastructure replacement alone?

Should governments publish annual indicators measuring heat exposure, disaster displacement, smoke exposure and climate-related mental health among children?

Those proposals remain politically contested.

Yet they emerge from a simple observation.

Children will inhabit the consequences of today's climate decisions longer than anyone making them.

Conclusion

The most unsettling aspect of climate change in Australia may not be the fires, floods or heatwaves themselves.

It may be the normalisation of childhood exposure to them.

A generation is growing up beneath conditions that would have seemed exceptional only a few decades ago. Dangerous heat arrives more often. Smoke seasons last longer. Extreme weather intrudes repeatedly into education, housing and health.

Most children adapt because children usually do. They attend school after disasters. They return to sporting fields when the smoke clears. They absorb new realities with unsettling speed.

Adaptation, however, should not be mistaken for protection.

The central question facing Australia is no longer whether climate change affects children. Evidence already answers that.

The question is whether governments are willing to place childhood wellbeing at the centre of climate policy rather than treating it as a secondary consequence.

Future generations will inherit the climate adults create. The more difficult judgement may concern what adults chose to ignore while creating it.

References

1. UNICEF Australia, Children and Climate Disaster Exposure
2. Climate Council, Climate Change And Health Research
3. University of Canberra, Bushfires Health Protection And Risk Communication
4. UNICEF, Climate Crisis And Children's Mental Health
5. Australian Institute of Health and Welfare, Australia’s Health
6. Deloitte Australia, The Economic And Social Impact Of Disasters On Children And Young People
7. HEAL Research Centre, Black Summer Smoke Exposure Analysis
8. Bushfire Smoke And Children’s Health, International Journal Of Environmental Research And Public Health
9. The Guardian, Educational Disruption And Climate Disasters
10. Royal Australasian College Of Physicians, Climate Change And Child Health

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Turning Waste Into Wealth - Julian Cribb

Surviving the 21st Century - Julian Cribb

AUTHOR Julian Cribb AM ATSE is an Australian science writer and author of seven books on the human existential emergency.  He is Co-founder, Council for the Human Future.  Julian Cribb's latest book is How to Fix a Broken Planet (Cambridge University Press, 2023)

Every year the world tips US$30 trillion’s worth of valuable materials into its garbage tips, waterways, the atmosphere, and other dumping grounds. 

Put another way, every person on Earth would be about $4000 a year better off if we reused stuff and reduced losses – instead of chucking it all away.

That’s the finding of the 2026 Circularity Gap report, a regular study of humanity’s colossal use and waste of materials. The gap it refers to is the difference between the avoidable losses incurred by our sloppy, lazy, throwaway society, and the huge benefits we can reap by eliminating losses and reusing materials.

More importantly, it is one of the few readily attainable goals that can save our society from collapse and our grandchildren from obliteration.

As discussed in the recent piece on population, the Earth is currently carrying 3 to 4 times more people than it can support in the long run. We have 8.3 billion people, heading for 11-12 billion by the latter part of the 21^st century. And according to scientific experts, the Earth can carry only 2.5 billion at todays levels of material consumption.

The selfish and the thoughtless frequently object that society (meaning they) will never agree to the 70 per cent cut in its material demands which is necessary for the preservation of civilisation. Maybe not – but closing the ‘circularity gap’ would almost eliminate the need for new materials to be extracted, by simply using as close to 100% of the old ones as we can get. Lowering our population will do the rest.

The bottom line is this: humanity currently consumes 105 billion tonnes of materials it has extracted from the Earth system every year, in the form of food, fibre, energy, minerals, timber and building materials. This has grown from 28 billion tonnes in 1972, meaning that our material demand has increased by 275% in the same time it took the population to grow by 115%. In resource terms, today’s humans are three times greedier than their grandparents.

However, the maximum the Earth can sustain renewably, according to the Global Footprint Network and scientific analysts, is the extraction of 60 billion tonnes of materials annually.

At present rates human material consumption is forecast to hit 160 billion tonnes by the 2060s – 100 billion tonnes more than the Earth can support. And we will waste around 150 billion tonnes of it.

Reduced to the individual, the average person now consumes 12 tonnes of materials a year (far more in rich countries), rising to 18 tonnes in the 2060s. Yet the Earth can sustain only 7 tonnes per person.

The global resource crisis is most evident in the growing water shortages, which now afflict half of Earth’s citizens and most of our megacities. But global shortages of food, timber, clean air and key strategic minerals are not far away.

The latest Circularity Gap report, however, accentuates not so much the crisis – as the opportunity. A thirty trillion dollar (€25tn) opportunity, from eliminating unnecessary losses in all productive areas of the economy, especially in food, energy, processing, manufacturing, transport and construction.

The report states “This means that for every €3 of economic value created globally, around €1 is lost due to linear material use. These losses are avoidable and represent a significant opportunity for circularity to enhance value recovery and long-term value retention across economies.”

Unfortunately, current economic metrics – like GDP – do not take account of these losses, it warns. In other words, we need a more ecologically-literate form of economics to base our decisions on.

The report cautions that realising our lost $30 trillion isn’t just about adopting recycling – it’s also very much about reducing resource extraction, improving efficiency, harvesting production waste and maximising resource value all along the chain.

“By retaining materials at higher utility and preventing waste and underutilisation, economies can capture substantial economic gains while reducing environmental pressures, supply risks, and social externalities embedded in linear practices.”

Figure 1. Areas of the value chain where the greatest gains can be made from eliminating waste.
Source CGR 2026.

The diagram above shows that every year $12 trillion is lost into rubbish dumps worldwide – perfectly reusable metals, plastics, wood, ceramics, nutrients and other products thrown away forever.

The energy sector is close behind, with around $10 trillion in lost energy through sloppy mining practices, gas flares, leaks, urban grids and inefficient machinery such as the internal combustion engine. The average car owner is unaware that a quarter to a third or all the fuel they put into their vehicle is wasted, mostly in the form of heat.

Poor maintenance of fixed infrastructure costs society another $6 trillion a year, plus $1 trillion lost in refining and manufacturing processes.

Most shocking is the loss of food in storage, transport, retail, and final consumption., which amounts to $800 billion every year. In a world with 700 million hungry people, we waste enough food to feed 2-3 billion.

It is time to recognise our throwaway society, not just as obscenely wasteful – but as a bleak and selfish chapter in the human story that casually threw away the lives of its children and grandchildren in the civilisational collapse which it precipitated.

People are starting to recognise the havoc which global heating, nuclear war and even environmental collapse can cause to humanity’s future chances of survival. But they remain largely ignorant or indifferent to the lasting damage that resource failure can inflict.

Besides freshwater, major life-sustaining resources now slipping into critical scarcity include topsoil (for growing crops), forest products, fish and clean air. Global heating and continued population growth will amplify all these shortages.

Resource failure is, with strong reason, one of the ten catastrophic threats that are currently combining to menace the future of civilisation and the human species. Also, it is getting worse: the volume of materials recycled has actually fallen from 8.6 to 6.9% in the past ten years. Meaning we waste 93% of everything we now extract from the Earth.

Yet the solution - closing the ‘circularity gap’ - is both affordable and readily achievable. There is nothing that prevents us from ending waste – and thirty trillion darn good reasons to do so.

The human jawbone is the most destructive implement on the planet. Every day, yours alone chews through 12 kilos of topsoil, 950 litres of water, 1.6 litres of fuel and 1g of increasingly toxic pesticides while producing 4.9 kilos of carbon emissions. Yet all of this colossal waste could be reversed simply by adopting ‘renewable food’. And nobody in the world ever need go hungry again.

In summary, the rewards for ending losses and recycling our waste are far, far greater than the discovery of any major new technology. For instance, it is worth 75 times the current global value of the AI industry. It is worth more than three times the value of the global oil industry. It is worth almost forty times the wealth of Elon Musk. It is equivalent to one quarter of the total value of the world economy ($126tr).

Yet this is an industry that hardly exists in the eyes of our wasteful world. An industry few billionaires have yet seen fit to invest in. An industry on which the very future of humanity, on our finite Earth, depends for survival.

Retrieving those vast losses does not require any new alchemy. The technologies to do it already exist - and many have done for decades. The glass and aluminium industries have shown the way. Plastics and rare metals are catching up. Smart companies are already scenting huge profits.

So let’s start turning all that waste into real wealth.

Julian Cribb Articles

• Up to our eyeballs in 💩💩💩
• Plasticide: a crime against humanity Our Rising Oceans
• Will climate change put women in the ascendant?
• When the water runs out...
• The great dying
• Australia issues ‘terrifying’ climate warning
• 'Died of a delusion': the fate of modern civilisation?
• Collapse is near, scientists warn
• De-icing the Earth: a fatal human choice. 
• Rivers of Death
• Unlike politicians, thermometers do not lie
• Welcome to BunkerWorld: Home of the rich and fearful
• Wisdom of the elders
• The black work of Big Oil
• Stealing the Breath of Life
• The Earth Uncloaked - a catastrophe in slow motion 
  
• Military experts warn of climate wars
• Tackling the Earth Emergency
• A distracted world marches steadily towards catastrophe

Vanishing Ground: Inside Australia's Race to Save Native Flora From Climate Collapse - Lethal Heating Editor BDA

Australia's native plants face collapse as
ancient ranges vanish under accelerating climate pressure

Key Points

Up to seventy percent of Australia's native plant species may face climate conditions outside historical survival ranges by 2050.[1] Ancient Gondwanan species such as the Wollemi pine face compounding threats from drought, bushfire and shrinking refugia.[3] Displaced native flora threatens pollination networks, forest structure and soil health across affected ecosystems.[4] Seed banking, assisted migration and reformed environmental law offer partial but incomplete protection for vulnerable species.[7]

Botanists working in a Blue Mountains canyon are recording soil and temperature readings unlike anything from previous decades.

Wollemi pines here have outlasted droughts, ice ages and continental drift. Scientists now describe this remnant population as critically exposed.

Government researchers warn up to seventy percent of native plant species may face conditions outside historical survival ranges by 2050.

The projection comes from the nation's first National Climate Risk Assessment, a landmark scientific undertaking spanning multiple government agencies.

It signals unprecedented pressure on ecosystems shaped across millions of years of relative climatic stability.^[1]

Current Extinction Vulnerabilities

Southern Australian forests and rainforest remnants hold some of the highest concentrations of vulnerable plant species nationwide. Ecological modelling identifies eucalyptus-dominated landscapes as particularly exposed to accelerating habitat loss and range contraction. This genus covers three quarters of the continent's native forest cover and underpins entire regional ecosystems.^[2]

The Wollemi pine survives as fewer than sixty wild adults confined to a single Blue Mountains canyon system. Intensifying drought and bushfire threaten this ancient population's fragile microclimate refuge with growing frequency. Conservation officials rank it among Australia's most vulnerable Gondwanan relicts requiring urgent long-term protection.^[3]

Narrow thermal tolerances leave many endemic species unable to survive shifts of even a few degrees. Limited seed dispersal restricts how quickly populations can track suitable climate zones across the landscape. Small, fragmented populations carry reduced genetic diversity, weakening resilience to rapid environmental change.^[4]

Researchers build species distribution models from decades of climate and field observation records to define range boundaries. These baselines mark the outer edge of conditions a species has ever been recorded surviving in the wild. When projected 2050 conditions fall outside this envelope, scientists classify the species as critically exposed.^[5] 

Climate Mechanics and Modelling

Temperature extremes, rainfall reliability and soil moisture jointly define a plant's realised climate envelope across its range. Minimum winter temperatures and summer heat maxima often set the outer limits of survival. Scientists combine these variables into models projecting future suitability across the entire continent.^[5]

A species' historical range often reflects competition and geography, rather than pure physiological limits alone. Laboratory trials can reveal tolerances considerably broader than field distributions actually suggest. This gap complicates predictions of exactly where struggling species might yet persist long term.^[6]

Prolonged drought and catastrophic bushfire events compress decades of gradual climate change into single, brutal seasons. The 2019 to 2020 bushfires pushed fragile Gondwanan populations toward the edge of survival. Extreme events convert gradual climate trends into sudden, irreversible ecological shocks.^[3]

Sheltered gullies, southern slopes and elevated plateaus can buffer local populations from broader regional warming trends. Such microclimate refuges may allow some species to persist well beyond continental-scale projections. Researchers caution these pockets offer temporary reprieve rather than lasting, guaranteed protection.^[2] 

Ecological Cascades and Interactions

Specialised native bees, birds and mammals depend on precise flowering times that are now shifting unpredictably. Range displacement threatens to break these finely tuned pollination partnerships built over millennia. Losing pollinators can trigger reproductive failure long before a plant species physically vanishes.^[4]

Canopy dieback alters forest structure, reducing shade cover and moisture retention across whole landscapes. Understorey species lose protective cover as dominant trees struggle under harsher new conditions. These structural shifts cascade through entire ecosystems, reshaping habitat availability for countless dependent species.^[6]

Plant roots sustain complex soil microbial communities that are essential for long-term nutrient cycling. Vegetation loss disrupts these underground networks, gradually reducing soil fertility across affected zones. Degraded soils then struggle to support future regrowth or restoration efforts.^[4]

Weeds adapted to warmer, drier conditions often out-compete stressed native species for scarce resources. Land managers report weed incursions accelerating rapidly in areas of significant native dieback. Queensland modelling confirms several invasive species gaining new range as natives retreat.^[5]

Conservation and Management Strategies

Conservationists prioritise species with narrow ranges, slow dispersal and irreplaceable ancient genetic lineages. Endemic status and cultural significance also weigh heavily in translocation decisions across programs. Scientists favour species offering the clearest ecological return on limited conservation resources.^[4]

The National Seed Bank in Canberra safeguards genetic diversity across thousands of native plant species. Researchers increasingly draw seed from climate-adapted populations across wider geographic zones nationwide. This shift aims to build lasting resilience into future revegetation and restoration projects.^[7]

Selective breeding programs test whether hardier genetic variants can withstand considerably harsher future conditions. Genomic tools increasingly help researchers identify traits linked to drought and heat tolerance. These techniques remain experimental, yet offer a promising avenue for vulnerable species.^[8]

Traditional Indigenous fire management reduces fuel loads and protects fire-sensitive rainforest refugia effectively. Cultural burning practices, refined across millennia of accumulated knowledge, complement modern scientific monitoring. Combining both knowledge systems strengthens long-term protection for vulnerable ecosystems nationwide.^[3] 

Policy, Socio-Economics and Future Outlook

Australia's national environment law remained largely silent on climate change for twenty five long years. Reformed legislation introduces new environmental standards and an independent regulator to close this gap. Conservation groups argue protected areas alone cannot adequately follow species as ranges shift.^[9]

Native forests store vast quantities of carbon within their trunks, roots and surrounding soil. Widespread flora decline threatens to steadily weaken Australia's crucial natural carbon sinks. This risk complicates the nation's ability to meet international emissions reduction commitments.^[1]

Forestry operations depend on species suited to increasingly unpredictable and rapidly shifting growing conditions. Ecotourism ventures built around iconic landscapes face declining visitor drawcards as habitats change dramatically. Agricultural regions may lose pollination services once reliably provided by displaced native plants.^[2]

Community monitoring programs already track flowering times, range shifts and local extinctions across regions. Citizen scientists provide crucial ground-level data that complements satellite imagery and laboratory research. Expanding these networks could sharpen early warning systems for Australia's most exposed species.^[1]

Australia's native flora stands at a genuine crossroads. Ancient lineages survived ice ages, yet now confront warming reshaping the continent within decades. Government modelling, conservation science and Indigenous knowledge together outline a clear picture of risk.

Seed banks, translocation programs and reformed environmental law each offer partial protection. None alone can substitute for sustained funding and rigorous political accountability. Ecosystems cannot wait for slow legislative timelines while ranges continue shifting.

The investigation shows Australia possesses the science needed to act decisively. What remains uncertain is whether institutions will match that knowledge with resourcing and urgency. The fate of species like the Wollemi pine may ultimately depend on that choice.

References

1. Assessing Australia's Climate Risks. The Department of Climate Change, Energy, the Environment and Water outlines the National Climate Risk Assessment projection that up to seventy percent of native plant species may face conditions outside their historical range by 2050.

2. Why Plant Extinctions May Rise by 2100 Even if Species Keep Shifting Ranges. This report on a University of California, Davis study published in Science identifies southern Australia and its eucalyptus forests among the regions facing the highest climate-driven extinction risk.

3. Wollemi Pine Threatened Species Action Plan. The federal government profile details the Wollemi pine's critically small wild population and its escalating exposure to drought and bushfire.

4. A Multidisciplinary Approach to Inform Assisted Migration of the Restricted Rainforest Tree, Fontainea rostrata. This peer-reviewed study examines the biological traits, including narrow thermal tolerance and limited dispersal, that heighten extinction risk for restricted Australian rainforest species.

5. Climate-Induced Range Shift and Risk Assessment of Emerging Weeds in Queensland, Australia. This peer-reviewed modelling study demonstrates how bioclimatic variables define species range boundaries and how weeds are projected to expand as conditions shift.

6. Climate Modelling Shows Increased Risk to Eucalyptus sideroxylon on the Eastern Coast of Australia Compared to Eucalyptus albens. This peer-reviewed species distribution modelling study projects substantial habitat loss for two eucalypt species by 2050.

7. The National Seedbank: Safeguarding Australia's Native Flora Through Ex Situ Conservation. This resource details the National Seed Bank's role preserving genetic diversity and supporting climate-adapted restoration of threatened native flora.

8. Status of Australia's Forest Genetic Resources 2021. This government report outlines genetic management approaches, including selective breeding, aimed at building climate resilience in native forest species.

9. Q&A: Reforming Australia's Nature Laws Explained. WWF-Australia explains long-standing gaps in national environment law and the reforms intended to strengthen protection amid climate-driven habitat change.

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The Vanishing Snowline: How Warming Is Reshaping the Australian Alps - Lethal Heating Editor BDA

Snow cover across the Australian Alps
has shrunk to its lowest level in two millennia

Key Points

Peak snow depth at Spencers Creek has fallen by 44.8 centimetres since 1954, a drop of 24 per cent.[1] The Mountain Pygmy-Possum, with fewer than 2000 individuals left, faces rising mortality as snow insulation vanishes.[2] Australia's ski industry contributes an estimated 3.33 billion dollars annually, but seasons could shrink 40 per cent by the 2050s.[3] Snowy Scheme inflows and Murray-Darling water security depend on snowmelt patterns now shifting earlier each year.[4]

Each winter, workers from Snowy Hydro trudge to seven wooden poles above Spencers Creek. They plunge a measuring probe into the snowpack, continuing a survey begun in 1954. Lately, the readings have told a familiar story of decline.

These changes reflect warming temperatures and drier winters across the mountains. Scientists warn the shifts threaten fragile alpine ecosystems and a billion dollar tourism industry. Bureau of Meteorology records confirm the decline is accelerating across every measured site.^[5]

Observed Climate Trends

Long-term records show a clear decline in snow depth across the Alps. At Spencers Creek, maximum snow depth has fallen by 44.8 centimetres since 1954, a drop of 24 per cent. CSIRO analysis of three long-running sites confirms a downward trend of about half a centimetre every year.^[6]

The number of days snow persists on the ground has also fallen sharply. Winters with snow lasting more than 50 days dropped from 16 between 1935 and 1994 to just two since 1995. Researchers say this shift reflects a fundamental change in the character of Australian winters.^[7]

Warming has also intensified across the alpine zone. Australia has warmed by 1.51 degrees Celsius since 1910, with most of that warming occurring since 1950. Bureau of Meteorology records confirm this warming has accelerated markedly since 1950.^[8]

Researchers tracking temperature and elevation confirm this disparity is measurable and growing. Higher elevations are warming faster than surrounding lowlands, reducing the reflective snow cover that once slowed the trend. NSW Government projections indicate winter temperatures could rise by more than two degrees this century.^[9]

Ecological Impacts

Few Australian mammals depend on snow as heavily as the mountain pygmy-possum. This tiny marsupial hibernates inside boulder fields, using snow cover as insulation from freezing air. Fewer than 2000 individuals remain, and researchers link its decline directly to shrinking snowpack.^[2]

Shorter snow seasons disrupt hibernation across several alpine species. Without a thick insulating layer, cold air penetrates rock crevices, waking possums before spring food supplies return. Premature waking burns fat reserves, and repeated disturbance can prove fatal within a single bad winter.^[2]

Reduced snow cover also opens the door to invasive species at high altitude. Feral horses, deer and weeds can now access terrain once locked under snow for months each year. Land managers say this expansion adds pressure to ecosystems already weakened by warming.^[9]

Alpine bogs and fens face similar strain from reduced snowmelt. These wetlands rely on gradual meltwater to stay saturated through the warmer months. Reduced inflows dry out these fragile systems, threatening habitat for frogs and other specialised wildlife.^[9]

Economic and Tourism Consequences

Shorter, less reliable winters are straining the finances of Australian ski resorts. The industry currently contributes an estimated 3.33 billion dollars to the national economy each year. Modelling shows ski seasons could shrink by more than 40 per cent by the 2050s.^[3]

Resort operators are adapting through diversification rather than snow alone. Many are expanding summer offerings such as mountain biking, hiking and warm weather accommodation. Researchers describe this shift as essential for keeping alpine towns economically viable.^[6]

Artificial snowmaking has become central to keeping resorts open. Expanding snowmaking capacity demands heavy investment in water storage, pumps and electricity infrastructure. One study estimated the main resorts would need over 700 additional snow guns and vast water volumes.^[10]

The long-term economic outlook for snow-dependent towns remains uncertain. Thousands of regional jobs depend directly and indirectly on winter visitors each season. Analysts warn declining snow reliability could hollow out communities with few other income sources.^[3]

Water Security and Hydrology

Alpine snowpack plays a critical role in the Murray-Darling Basin's water cycle. About half of the Snowy Scheme's inflows arrive as snowmelt and rain during spring. A poor snow season can therefore reduce total water inflows for the entire year.^[4]

Earlier snowmelt shifts the timing of water available for irrigation downstream. Farmers across the Murray and Murrumbidgee valleys depend on predictable seasonal releases for their crops. Changed melt timing complicates planning for an irrigation sector worth billions of dollars annually.^[4]

The Snowy Mountains Hydro-electric Scheme also depends on reliable alpine precipitation. Its nine power stations generate about 4500 gigawatt hours of renewable electricity each year. Declining and more variable snowmelt threatens the predictability of this output over time.^[4]

High-altitude catchments are already recording reduced inflows. Projections suggest surface water run-off could fall by more than 40 millimetres a year at higher elevations by the 2060s. That decline would compound pressure on every water user relying on the alpine catchment.^[9]

Future Projections and Mitigation

Climate models paint a stark picture for natural snow beyond 2050. Under a high emissions scenario, maximum snow depths could fall by up to 90 per cent. Even under lower emissions, natural snow reliability is projected to weaken substantially by mid-century.^[6]

Lower elevation sites are expected to lose reliable snow cover first. Locations below 1600 metres face the steepest projected declines in maximum snow depth. Higher resorts may retain patchy cover longer, but even these sites show clear warming trends.^[6]

Compounding bushfire risk adds urgency to alpine conservation efforts. Land managers now prioritise fire management, weed control and habitat connectivity to help species adapt. These strategies aim to buy time for ecosystems facing simultaneous climate pressures.^[6]

Strong policy settings remain central to slowing alpine decline. Emissions reduction, water planning and coordinated cross-jurisdictional management all shape the region's future. Without sustained action, scientists warn Australia's alpine landscape will keep changing rapidly.^[9]

Australia's alpine snowpack is retreating at a pace unmatched in centuries. Spencers Creek's long record echoes signals seen across ecosystems, economies, and infrastructure. Warming temperatures, rather than natural variability, drive this accelerating decline.

Governments, resort operators and land managers each hold responsibility for the response. Robust water planning, emissions reduction and habitat protection all require sustained investment and oversight. Communities built around snow depend on decisions made well beyond the mountains.

The evidence points toward a shorter, less predictable snow season ahead. How Australia manages water, energy and conservation policy will determine what survives. The Alps now stand as a measurable test of national climate accountability.

References

1. Australian Snowpack Disappearing Under the Influence of Global Warming and Solar Activity. Peer-reviewed study documenting a 44.8 centimetre decline in maximum snow depth at Spencers Creek since 1954.

2. How the mountain pygmy-possum can be saved from climate change. UNSW research detailing how shrinking snow insulation threatens the survival of the critically endangered marsupial.

3. Australia's ski industry falls victim to declining snowfall. Analysis of the economic contribution of Australian ski resorts and projected season-length losses under warming scenarios.

4. Climate change impacts on snow. NSW Government assessment of how declining snowfall affects Snowy Scheme inflows and downstream water security.

5. Where is the snow. Bureau of Meteorology summary confirming declines in snow depth, cover and snow days since the late 1950s.

6. Climate concerns: Trends in Australian snow. CSIRO overview of long-term snow depth trends and projections for the Australian alpine region.

7. Climate change driven persistence changes in Australian snowpatches. Peer-reviewed research showing a sharp decline in winters with snow persisting beyond 50 days since the mid-1990s.

8. Australia's changing climate. Bureau of Meteorology data confirming Australia has warmed 1.51 degrees Celsius since 1910, with accelerating decade-on-decade trends.

9. Climate change impacts on our alpine areas. NSW Government projections covering alpine warming, invasive species, wetland impacts and water run-off declines.

10. Climate Response by the Ski Industry: The Shortcomings of Snowmaking for Australian Resorts. Peer-reviewed study quantifying the infrastructure and water demands of expanded snowmaking under climate change.

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