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While world leaders assemble in the Brazilian Amazon for the 30th UN Climate Change Conference, it is vital to evaluate our collective progress in cutting worldwide emissions of greenhouse gases.

In spite of 30 years of UN climate summits, approximately half of the CO2 built up in the atmosphere after the dawn of industrialization has been released since 1990. Incidentally, 1990 was the publication of the First Assessment Report by the Intergovernmental Panel on Climate Change, which verified the threat of human-caused global warming. As scientists prepare the Seventh Assessment Report, they do so knowing that their work remains overshadowed by political agendas. Despite sincere attempts, the world is still dangerously off track to avert catastrophic climate change.

Unprecedented CO₂ Levels and Fossil Fuel Dependency

Recent data indicate that atmospheric carbon dioxide levels reached a record high of 423.9 ppm in the year 2024, with the increase rate from 2023 to 2024 surging by the biggest annual rise since modern measurements began in 1957. According to the international carbon monitoring initiative, ninety percent of total global CO₂ emissions in 2024 came from burning fossil fuels, while the remaining 10% was due to alterations in land use such as forest clearance and wildfires.

While the rise in fossil CO₂ emissions in 2024 was driven by higher use of gas and oil—accounting for more than 50% of worldwide discharges—coal burning also attained a historic peak, constituting forty-one percent. Despite the previous climate summit's evaluation calling for nations to transition away from fossil fuels, global strategies still aim to produce more than double the quantity of fossil fuels in 2030 than aligns with limiting global warming to 1.5C, with continued extraction of gas rationalized as a less polluting transition fuel.

The Illusion of Eco-Friendly Measures

Rather than focusing on financial motivators to accelerate the phase-out of carbon fuels, climate policies are overly dependent on feel-good nature positive solutions that aim to neutralize CO2 output by afforestation instead of reducing industrial emissions. Although protecting, enlarging, and rehabilitating natural carbon sinks like woodlands and marshes is inherently good, research has demonstrated that there is not enough land to achieve the global goal of net zero emissions using ecological methods alone.

Approximately 1 billion hectares—an area bigger than the United States of America—is required to meet net zero pledges. Over 40% of this area would need to be transformed from existing uses like food production to carbon sequestration projects by 2060 at an unprecedented rate.

Even if this ideal restoration could be achieved, forests require years to grow and can burn down, so they cannot be considered as a fast or permanent CO2 retention method, particularly in a fast-changing climate. While severe temperatures and aridity affect larger regions, these well-intentioned efforts could literally go up in smoke.

The Diminishing of Planetary Absorbers

Research data tells us that about half of the carbon dioxide released each year remains in the atmosphere, while the remainder is taken up by oceans and land ecosystems. With global heating, these environmental absorbers are becoming less effective at soaking up CO₂, which means that more carbon accumulates in the air, intensifying climate change. Transferring the mitigation burden onto the land sector simply relieves the oil and gas sector from the pressure to reduce emissions any time soon.

The Carbon Debt and Future Generations

Achieving net zero by 2050 requires CO2 extraction (CDR), which at present relies almost exclusively on land-based measures to soak up excess carbon from the atmosphere. Polluters can simply purchase offsets to compensate for their discharges and continue with business as usual. Meanwhile, the energy imbalance resulting from the burning of fossil fuels keeps on further destabilise the global climate system. In effect, we are increasing our climate liability to our global account, passing on our descendants with an insurmountable burden.

To curb the magnitude and duration of overshoot the global warming targets, the planet ultimately needs to surpass the balancing impact of net zero and start to drawdown past carbon outputs to reach a carbon-negative state.

The Policy Misrepresentation of Net Zero

According to the most recent data from the Global Carbon Project, vegetation-based CDR is currently absorbing the equal of about five percent of yearly CO2 from fuels, while engineered carbon extraction represents only about one-millionth of the CO2 emitted from carbon sources. Optimistic industry estimates suggest around 0.1% of worldwide CO2 output. Without meaning to be controversial, the political distortion of net zero is a deceptive gap that distracts from the research-based necessity to eradicate the primary cause of our overheating planet—carbon-based energy.

The Urgent Need for Concrete Action

Although this research-backed truth should lead talks at Cop30, past events indicates that polite incrementalism and deference to politics will win out. Ambiguous promises of future ambition will continue to postpone the pressing requirement for definite short-term measures. Unless leaders have the courage to put a price on carbon to terminate the age of hydrocarbons, we are releasing increasing amounts of CO2 to the air, worsening the physical catastrophe currently happening all around us.

The challenge we confront is straightforward: genuinely respond to the scientific reality of our crisis or endure the consequences of this profound moral failure for generations ahead.