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While world leaders assemble in Brazil for Cop30, it is vital to review our collective progress in lowering worldwide emissions of greenhouse gases.

Despite 30 years of UN climate summits, nearly 50% of the carbon dioxide accumulated in the atmosphere since the Industrial Revolution has been emitted after the year 1990. Incidentally, 1990 marked the publication of the First Assessment Report by the IPCC, which verified the threat of human-caused global warming. While researchers prepare the Seventh Assessment Report, they do so aware that scientific findings remains overshadowed by political influences. Despite well-intentioned efforts, the world is remains far from the path to avert dangerous global warming.

Record-Breaking CO₂ Levels and Carbon-Based Fuel Dependency

Latest figures show that CO₂ concentrations reached a new peak of 423.9 parts per million in the year 2024, with the increase rate from 2023 to 2024 surging by the biggest annual rise since modern measurements began in the late 1950s. Based on the Global Carbon Project, ninety percent of total global CO₂ emissions in last year came from burning fossil fuels, while the remaining 10% resulted from land-use changes such as forest clearance and forest fires.

Although the rise in carbon emissions from fuels in recent times was driven by higher use of gas and oil—accounting for more than 50% of worldwide discharges—coal burning also reached a record high, constituting forty-one percent. Despite Cop28’s global stocktake calling for nations to move beyond carbon fuels, collective plans still intend to extract over twice the amount of hydrocarbons in 2030 than aligns with limiting planet heating to 1.5C, with continued extraction of natural gas rationalized as a lower emission transition fuel.

The Mirage of Nature-Based Solutions

Rather than concentrating on financial motivators to accelerate the elimination of carbon fuels, climate policies are heavily reliant on feelgood eco-positive approaches that seek to neutralize CO2 output by planting trees instead of reducing industrial emissions. While conserving, expanding, and rehabilitating ecological absorbers like forests and wetlands is beneficial in itself, research has demonstrated that there is not enough land to reach the global goal of net zero emissions using nature-based solutions by themselves.

Approximately one billion hectares—a territory bigger than the United States of America—is needed to meet carbon neutrality commitments. More than 40% of this land would need to be converted from current applications like agriculture to carbon sequestration projects by 2060 at an never-before-seen pace.

Although this regenerative utopia could be achieved, woodlands 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 engulf larger regions, these sincere attempts could literally go up in smoke.

The Weakening of Planetary Absorbers

Scientific evidence tells us that about half of the carbon dioxide released annually stays in the air, while the remainder is taken up by oceans and terrestrial systems. As the planet warms, these natural carbon sinks are becoming less effective at capturing CO₂, which means that additional CO2 accumulates in the atmosphere, intensifying climate change. Transferring the mitigation burden onto the land sector effectively excuses the fossil fuel industry from the pressure to reduce emissions in the near future.

The Carbon Debt and Future Generations

Achieving carbon neutrality by mid-century requires carbon dioxide removal (CDR), which at present relies almost exclusively on land-based measures to absorb excess carbon from the atmosphere. Emitting companies can easily buy carbon credits to counterbalance their emissions and continue with normal operations. At the same time, the planetary heat imbalance caused by the combustion of hydrocarbons keeps on further disrupt the Earth’s climate. In effect, we are adding more carbon debt to our global account, leaving our descendants with an insurmountable burden.

To limit the scale and duration of overshoot the global warming targets, the planet eventually needs to go well beyond the neutralising effect of carbon neutrality and start to drawdown past carbon outputs to achieve net negative emissions.

The Political Distortion of Carbon Neutrality

Based on the most recent data from the Global Carbon Project, plant-based carbon removal is currently capturing the equal of about five percent of annual fossil carbon dioxide emissions, while technology-based CDR represents only about a tiny fraction of the CO2 emitted from fossil fuels. Optimistic industry estimates place it at around zero point one percent of worldwide CO2 output. Without meaning to be controversial, the policy twisting of net zero is an insidious loophole that distracts from the research-based necessity to eliminate the main source of our warming world—carbon-based energy.

The Critical Requirement for Concrete Action

While this research-backed truth should lead discussions at the climate summit, past events indicates that polite incrementalism and political kowtowing will prevail. Ambiguous promises of future ambition will keep on delay the pressing requirement for definite short-term measures. Unless policymakers have the courage to put a price on carbon to terminate the age of hydrocarbons, we are adding increasing amounts of CO2 to the air, compounding the environmental disaster now unfolding all around us.

The challenge we face is straightforward: genuinely respond to the evidence-based situation of our predicament or suffer the consequences of this profound moral failure for centuries to come.