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While world leaders gather in the Brazilian Amazon for Cop30, it is essential to review how we are faring together in reducing worldwide emissions of greenhouse gases.

In spite of 30 years of United Nations climate conferences, approximately half of the CO2 built up in the atmosphere since the Industrial Revolution has been emitted after the year 1990. Coincidentally, 1990 marked the release of the initial scientific evaluation by the IPCC, which verified the danger of anthropogenic climate change. As scientists work on the Seventh Assessment Report, they do so knowing that their work remains eclipsed by political influences. Despite sincere attempts, the world is still dangerously off track to avert dangerous global warming.

Unprecedented CO₂ Levels and Fossil Fuel Dependency

Latest figures show that atmospheric carbon dioxide levels hit a new peak of 423.9 ppm in the year 2024, with the increase rate from 2023 to 2024 surging by the largest yearly increase since record-keeping started in 1957. According to the international carbon monitoring initiative, ninety percent of worldwide carbon dioxide output in last year came from the combustion of carbon-based energy sources, while the remaining 10% resulted from alterations in land use such as deforestation and wildfires.

While the increase in carbon emissions from fuels in 2024 was propelled by higher use of natural gas and petroleum—representing over half of worldwide discharges—coal burning also attained a historic peak, making up forty-one percent. Despite Cop28’s global stocktake urging nations to move beyond fossil fuels, global strategies still intend to extract over twice the quantity of hydrocarbons in 2030 than aligns with keeping planet heating to 1.5C, with ongoing drilling of gas justified as a less polluting transition fuel.

The Mirage of Nature-Based Solutions

Rather than focusing on economic incentives to accelerate the elimination of fossil fuels, environmental strategies are heavily reliant on feelgood eco-positive approaches that aim to neutralize CO2 output by afforestation instead of reducing factory discharges. While conserving, expanding, and restoring ecological absorbers like woodlands and marshes is beneficial in itself, research has shown that there is not enough land to reach the global goal of net zero emissions using nature-based solutions by themselves.

Roughly one billion hectares—an area bigger than the United States of America—is required to fulfill carbon neutrality commitments. More than forty percent of this land would need to be transformed from current applications like agriculture to carbon sequestration projects by 2060 at an unprecedented rate.

Although this ideal restoration could be realized, woodlands require years to grow and can burn down, so they cannot be considered as a fast or permanent carbon storage solution, especially in a rapidly shifting environment. While severe temperatures and aridity engulf larger regions, these well-intentioned efforts could literally go up in smoke.

The Weakening of Natural Carbon Sinks

Scientific evidence tells us that about 50% of the carbon dioxide released each year stays in the air, while the rest is taken up by oceans and land ecosystems. With global heating, these natural carbon sinks are becoming less effective at capturing CO₂, which means that more carbon builds up in the atmosphere, further exacerbating global warming. Shifting the mitigation burden onto the land sector simply relieves the fossil fuel industry from the pressure to cut pollution any time soon.

The Carbon Debt and Future Generations

Achieving carbon neutrality by mid-century requires carbon dioxide removal (CDR), which at present relies almost exclusively on terrestrial methods to soak up excess carbon from the atmosphere. Emitting companies can easily purchase offsets to counterbalance their discharges and proceed with normal operations. Meanwhile, the energy imbalance caused by the combustion of hydrocarbons keeps on further destabilise the global climate system. Essentially, we are adding more carbon debt to our planetary credit card, leaving future generations with an unpayable liability.

To limit the scale and duration of exceeding the global warming targets, the world eventually needs to surpass the balancing impact of net zero and begin to remove cumulative historical emissions to reach a carbon-negative state.

The Political Distortion of Net Zero

According to the latest numbers from the Global Carbon Project, vegetation-based CDR is currently absorbing the equal of about 5% of yearly CO2 from fuels, while technology-based CDR represents only about one-millionth of the CO2 emitted from carbon sources. Optimistic sector projections suggest around 0.1% of total global emissions. Without meaning to be controversial, the policy twisting of carbon neutrality is an insidious loophole that distracts from the scientific imperative to eliminate the main source of our warming world—carbon-based energy.

The Urgent Need for Concrete Action

While this scientific reality should dominate discussions at Cop30, history indicates that gradual, cautious steps and deference to politics will prevail. Vague statements of long-term goals will keep on delay the urgent need for definite short-term measures. Unless policymakers are brave enough to put a price on carbon to bring the era of fossil fuels to a definitive end, we are releasing increasing amounts of CO2 to the atmosphere, compounding the physical catastrophe now unfolding across the globe.

The challenge we face is straightforward: take real action to the evidence-based situation of our predicament or suffer the consequences of this deep ethical lapse for centuries to come.