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While world leaders gather in Brazil for the 30th UN Climate Change Conference, it is crucial to assess our collective progress in cutting 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 after the dawn of industrialization has been emitted after the year 1990. Coincidentally, 1990 marked the publication of the initial scientific evaluation by the IPCC, which confirmed the threat of anthropogenic climate change. As scientists work on the Seventh Assessment Report, they do so knowing that their work remains overshadowed by political influences. Regardless of sincere attempts, the planet is remains far from the path to prevent catastrophic climate change.

Record-Breaking CO₂ Levels and Carbon-Based Fuel Dependency

Recent data indicate that atmospheric carbon dioxide levels hit a new peak of 423.9 parts per million in the year 2024, with the increase rate from the previous year jumping by the biggest annual rise since modern measurements began in 1957. Based on the Global Carbon Project, ninety percent of worldwide carbon dioxide output in 2024 came from the combustion of carbon-based energy sources, while the remaining 10% was due to land-use changes such as deforestation and forest fires.

Although the increase in fossil CO₂ emissions in 2024 was propelled by increased use of natural gas and petroleum—representing over half of global emissions—the use of coal also attained a record high, making up 41%. In spite of Cop28’s global stocktake calling for nations to transition away from fossil fuels, collective plans still aim to produce more than double the quantity of hydrocarbons in 2030 than aligns with limiting planet heating to 1.5 degrees Celsius, with continued extraction of natural gas justified as a less polluting bridge fuel.

The Mirage of Eco-Friendly Measures

Instead of focusing on economic incentives to speed up the phase-out of carbon fuels, environmental strategies are overly dependent on feelgood eco-positive approaches that aim to neutralize CO2 output by planting trees rather than reducing factory discharges. Although protecting, enlarging, and rehabilitating ecological absorbers like forests and marshes is beneficial in itself, research has shown that there is not enough land to achieve the worldwide target of carbon neutrality using ecological methods by themselves.

Approximately one billion hectares—a territory larger than the United States of America—is needed to meet carbon neutrality commitments. Over forty percent of this land would need to be transformed from existing uses like food production to carbon sequestration projects by the year 2060 at an unprecedented rate.

Even if this regenerative utopia could be realized, forests take time to mature and can burn down, so they cannot be considered as a fast or lasting carbon storage solution, particularly in a fast-changing environment. While severe temperatures and aridity affect more of the planet, these sincere attempts could literally be destroyed by fire.

The Weakening of Natural Carbon Sinks

Research data indicates that about half of the carbon dioxide released each year remains in the atmosphere, while the rest is absorbed by seas and land ecosystems. As the planet warms, these natural carbon sinks are becoming less effective at capturing CO₂, meaning that more carbon builds up in the air, intensifying global warming. Shifting the mitigation burden onto the land sector simply relieves the fossil fuel industry from the urgency to cut pollution any time soon.

The Climate Liability and Future Generations

Achieving net zero by 2050 demands carbon dioxide removal (CDR), which currently relies almost exclusively on land-based measures to absorb excess carbon from the atmosphere. Emitting companies can simply buy carbon credits to counterbalance their discharges and proceed with business as usual. At the same time, the energy imbalance resulting from the burning of fossil fuels continues to further disrupt the Earth’s climate. In effect, we are increasing our climate liability to our global account, leaving future generations with an insurmountable burden.

To curb the scale and duration of overshoot the global warming targets, the world ultimately needs to go well beyond the balancing impact of net zero and start to remove cumulative historical emissions to reach net negative emissions.

The Policy Misrepresentation of Net Zero

According to the latest numbers from the international carbon research group, vegetation-based CDR is presently absorbing the equivalent of about 5% of yearly CO2 from fuels, while engineered carbon extraction accounts for only about one-millionth of the carbon released from fossil fuels. More generous sector projections suggest around zero point one percent 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 eliminate the primary cause of our warming world—carbon-based energy.

The Critical Requirement for Concrete Action

While this research-backed truth should lead discussions at Cop30, history suggests that gradual, cautious steps and deference to politics will prevail. Vague statements of future ambition will continue to postpone the pressing requirement for concrete immediate action. Until leaders are brave enough to implement carbon pricing to bring the era of fossil fuels to a definitive end, we are adding increasing amounts of CO2 to the air, worsening the physical catastrophe currently happening all around us.

The challenge we face is simple: genuinely respond to the evidence-based situation of our predicament or suffer the results of this deep ethical lapse for centuries to come.