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While world leaders assemble in Brazil for Cop30, it is vital to assess how we are faring together in lowering worldwide emissions of greenhouse gases.

Despite three decades of United Nations climate conferences, nearly 50% of the carbon dioxide accumulated in the atmosphere after the dawn of industrialization has been emitted since 1990. Coincidentally, 1990 marked the publication of the initial scientific evaluation by the IPCC, which confirmed the danger of anthropogenic climate change. While researchers work on the Seventh Assessment Report, they do so knowing that scientific findings remains eclipsed by political influences. Despite well-intentioned efforts, the world is still far from the path to prevent dangerous global warming.

Unprecedented CO₂ Levels and Carbon-Based Fuel Dependency

Latest figures indicate that atmospheric carbon dioxide levels reached a record high of 423.9 parts per million in the year 2024, with the increase rate from the previous year surging by the largest yearly increase since modern measurements began in 1957. According to the international carbon monitoring initiative, ninety percent of worldwide carbon dioxide output in last year came from burning fossil fuels, while the other tenth resulted from land-use changes such as deforestation and forest fires.

While the rise in carbon emissions from fuels in 2024 was driven by increased use of natural gas and petroleum—accounting for over half of worldwide discharges—the use of coal also attained a historic peak, constituting 41%. In spite of the previous climate summit's evaluation calling for nations to transition away from fossil fuels, global strategies still intend to produce more than double the quantity of fossil fuels in the year 2030 than aligns with limiting planet heating to 1.5C, with continued extraction of gas rationalized as a lower emission transition fuel.

The Mirage of Eco-Friendly Measures

Instead of concentrating on financial motivators to speed up the elimination of fossil fuels, climate policies are overly dependent on feelgood nature positive approaches that seek to cancel out CO2 output by planting trees instead of reducing factory discharges. Although conserving, enlarging, and rehabilitating natural carbon sinks like forests and marshes is inherently good, research has demonstrated that there is not enough land to reach the global goal of net zero emissions using nature-based solutions alone.

Approximately 1 billion hectares—a territory bigger than the USA—is required to meet net zero pledges. Over forty percent of this land would need to be converted from current applications like food production to carbon capture initiatives by the year 2060 at an never-before-seen pace.

Even if this regenerative utopia could be achieved, forests require years to grow and can burn down, so they should not be viewed as a quick or lasting CO2 retention method, especially in a fast-changing environment. As extreme heat and aridity affect larger regions, these well-intentioned efforts could literally go up in smoke.

The Weakening of Natural Carbon Sinks

Research data tells us that about 50% of the carbon dioxide released each year stays in the air, while the rest is absorbed by oceans and terrestrial systems. As the planet warms, these natural carbon sinks are losing efficiency at capturing CO₂, meaning that additional CO2 accumulates in the atmosphere, intensifying climate change. Transferring the reduction responsibility onto the agricultural and forest sectors simply relieves the oil and gas sector from the pressure to reduce emissions any time soon.

The Climate Liability and Future Generations

Achieving carbon neutrality by mid-century requires CO2 extraction (CDR), which at present relies almost exclusively on terrestrial methods to soak up excess carbon from the atmosphere. Polluters can simply purchase offsets to counterbalance their emissions and proceed with business as usual. At the same time, the energy imbalance caused by the burning of fossil fuels continues to further destabilise the Earth’s climate. In effect, we are adding more carbon debt to our global account, leaving future generations with an insurmountable burden.

To limit the magnitude and length of overshoot the global warming targets, the planet ultimately needs to go well beyond the balancing impact of carbon neutrality and start to remove cumulative historical emissions to achieve a carbon-negative state.

The Policy Misrepresentation of Carbon Neutrality

According to the most recent data from the Global Carbon Project, plant-based carbon removal is currently absorbing the equivalent of about 5% of annual fossil carbon dioxide emissions, while engineered carbon extraction represents only about a tiny fraction of the carbon released from carbon sources. Optimistic industry estimates place it at around 0.1% of total global emissions. Without meaning to be controversial, the political distortion of net zero is a deceptive gap that takes focus away from the scientific imperative to eliminate the main source of our overheating planet—fossil fuels.

The Urgent Need for Concrete Action

While this research-backed truth should lead talks at the climate summit, past events suggests that gradual, cautious steps and political kowtowing will prevail. Ambiguous promises of future ambition will continue to delay the urgent need for concrete immediate action. Until policymakers have the courage to put a price on carbon to bring the era of fossil fuels to a definitive end, we are adding increasing amounts of CO2 to the air, compounding the physical catastrophe now unfolding across the globe.

The dilemma we face is simple: genuinely respond to the evidence-based situation of our crisis or endure the results of this deep ethical lapse for generations ahead.