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As global leaders convene in Brazil for the 30th UN Climate Change Conference, it is essential to assess our collective progress in cutting worldwide emissions of greenhouse gases.

Despite three decades of United Nations climate conferences, approximately half of the CO2 built up in the atmosphere since the Industrial Revolution has been released since 1990. Coincidentally, 1990 marked the release of the First Assessment Report by the Intergovernmental Panel on Climate Change, which verified the danger of anthropogenic climate change. As scientists prepare the Seventh Assessment Report, they do so knowing that scientific findings remains eclipsed by political agendas. Regardless of well-intentioned efforts, the planet is remains far from the path to avert dangerous global warming.

Unprecedented CO₂ Levels and Fossil Fuel Dependency

Recent data indicate that atmospheric carbon dioxide levels hit a new peak of 423.9 parts per million in 2024, with the increase rate from 2023 to 2024 surging by the biggest annual rise since record-keeping started in the late 1950s. According to the Global Carbon Project, 90% of total global CO₂ emissions in last year came from burning fossil fuels, while the remaining 10% was due to land-use changes such as forest clearance and wildfires.

While the increase in fossil CO₂ emissions in 2024 was driven by higher use of natural gas and petroleum—representing more than 50% of global emissions—the use of coal also attained a historic peak, constituting forty-one percent. In spite of the previous climate summit's evaluation urging nations to move beyond fossil fuels, collective plans still intend to produce more than double the amount of fossil fuels in 2030 than aligns with keeping global warming to 1.5 degrees Celsius, with continued extraction of natural gas justified as a less polluting transition fuel.

The Illusion of Eco-Friendly Measures

Rather than focusing on financial motivators to accelerate the phase-out of fossil fuels, environmental strategies are heavily reliant on feelgood eco-positive solutions that seek to cancel out carbon emissions by afforestation instead of cutting factory discharges. Although conserving, enlarging, and rehabilitating ecological absorbers like woodlands and marshes is inherently good, studies has demonstrated that there is not enough land to achieve the global goal of net zero emissions using nature-based solutions by themselves.

Roughly 1 billion hectares—an area bigger than the United States of America—is needed to fulfill carbon neutrality commitments. More than 40% of this land would need to be converted from existing uses like food production to carbon sequestration projects by 2060 at an never-before-seen pace.

Even if this ideal restoration could be achieved, 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 extreme heat and dryness affect larger regions, these well-intentioned efforts could literally be destroyed by fire.

The Weakening of Planetary Absorbers

Research data tells us that about 50% of the carbon dioxide released each year remains in the atmosphere, while the rest is taken up by seas and land ecosystems. As the planet warms, these natural carbon sinks are becoming less effective at soaking up CO₂, meaning that more carbon builds up in the air, intensifying global warming. Transferring the reduction responsibility onto the land sector simply relieves the oil and gas sector from the pressure to cut pollution in the near future.

The Climate Liability and Coming Populations

Achieving carbon neutrality by mid-century demands carbon dioxide removal (CDR), which currently relies almost exclusively on land-based measures to absorb excess carbon from the air. Emitting companies can simply buy carbon credits to counterbalance their emissions and proceed with business as usual. Meanwhile, the energy imbalance caused by the burning of fossil fuels continues to further destabilise the global climate system. In effect, we are adding more carbon debt to our planetary credit card, leaving our descendants with an insurmountable burden.

To curb the scale and length of exceeding the Paris Agreement temperature goals, the planet eventually needs to go well beyond the balancing impact of carbon neutrality and start to remove cumulative historical emissions to achieve net negative emissions.

The Political Distortion of Carbon Neutrality

Based on the most recent data from the international carbon research group, plant-based carbon removal is presently capturing the equivalent of about five percent of annual fossil carbon dioxide emissions, while engineered carbon extraction represents only about a tiny fraction of the carbon released from carbon sources. Optimistic sector projections place it at around 0.1% of total global emissions. At the risk of sounding like a heretic, the policy twisting of net zero is a deceptive gap that distracts from the scientific imperative to eradicate the primary cause of our warming world—fossil fuels.

The Critical Requirement for Definite Steps

While this research-backed truth should dominate discussions at the climate summit, history indicates that gradual, cautious steps and deference to politics will win out. Ambiguous promises of future ambition will continue to delay the urgent need for concrete immediate action. Unless leaders are brave enough to put a price on carbon to bring the era of fossil fuels to a definitive end, we are adding more and more carbon to the air, compounding the physical catastrophe now unfolding across the globe.

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