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While world leaders convene 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 carbon dioxide accumulated in the atmosphere since the Industrial Revolution has been released after the year 1990. Coincidentally, 1990 marked the release of the initial scientific evaluation by the IPCC, which confirmed the threat of human-caused global warming. While researchers work on the upcoming IPCC report, they do so aware that scientific findings remains eclipsed by political agendas. Regardless of well-intentioned efforts, the planet is still dangerously off track to avert dangerous global warming.

Unprecedented CO₂ Levels and Carbon-Based Fuel Dependency

Latest figures indicate that CO₂ concentrations reached a record high of 423.9 parts per million in the year 2024, with the increase rate from 2023 to 2024 jumping by the biggest annual rise since modern measurements began in the late 1950s. According to the Global Carbon Project, 90% of total global CO₂ emissions in 2024 originated from burning fossil fuels, while the remaining 10% was due to alterations in land use such as deforestation and wildfires.

Although the rise in carbon emissions from fuels in 2024 was driven by higher use of gas and oil—representing more than 50% of global emissions—coal burning also reached a record high, making up forty-one percent. Despite the previous climate summit's evaluation urging nations to move beyond carbon fuels, global strategies still aim to extract over twice the quantity of hydrocarbons in 2030 than is consistent with keeping global warming to 1.5 degrees Celsius, with ongoing drilling of gas justified as a lower emission bridge fuel.

The Illusion of Eco-Friendly Measures

Rather than focusing on financial motivators to accelerate the phase-out of fossil fuels, climate policies are overly dependent on feelgood eco-positive solutions that aim to neutralize CO2 output by planting trees instead of reducing factory discharges. While protecting, enlarging, and rehabilitating natural carbon sinks like woodlands and marshes is inherently good, research has demonstrated that there is not enough land to achieve the global goal of carbon neutrality using nature-based solutions alone.

Approximately 1 billion hectares—an area bigger than the USA—is required to meet carbon neutrality commitments. Over forty percent of this area would need to be converted from current applications like agriculture to carbon capture initiatives 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 quick or permanent CO2 retention method, particularly in a fast-changing environment. While extreme heat and dryness affect more of the planet, these sincere attempts could literally go up in smoke.

The Diminishing of Natural Carbon Sinks

Research data tells us that about 50% of the total CO₂ emitted each year remains in the atmosphere, while the rest is taken up by seas and land ecosystems. As the planet warms, these environmental absorbers are becoming less effective at capturing CO₂, meaning that more carbon accumulates in the air, intensifying global warming. Shifting the reduction responsibility onto the agricultural and forest sectors simply relieves the fossil fuel industry from the pressure to cut pollution in the near future.

The Climate Liability and Coming Populations

Reaching net zero by 2050 demands CO2 extraction (CDR), which at present depends largely on land-based measures to absorb excess carbon from the air. Emitting companies can easily purchase offsets to compensate for their discharges and proceed with business as usual. At the same time, the planetary heat imbalance caused by the combustion of hydrocarbons continues to further destabilise the Earth’s climate. In effect, we are increasing our climate liability to our planetary credit card, leaving future generations with an insurmountable burden.

To limit the scale and duration of overshoot the Paris Agreement temperature goals, the world eventually needs to go well beyond the neutralising effect of net zero and begin to drawdown cumulative historical emissions to achieve net negative emissions.

The Political Distortion of Net Zero

Based on the most recent data from the Global Carbon Project, vegetation-based CDR is currently capturing the equal of about five percent of yearly CO2 from fuels, while engineered carbon extraction represents only about one-millionth of the carbon released from carbon sources. More generous industry estimates suggest around 0.1% of total global emissions. Without meaning to be controversial, the political distortion of net zero is a deceptive gap that distracts from the research-based necessity to eradicate the primary cause of our overheating planet—carbon-based energy.

The Critical Requirement for Concrete Action

Although this research-backed truth should lead discussions at Cop30, past events indicates that polite incrementalism and political kowtowing will prevail. Ambiguous promises of future ambition will keep on postpone the urgent need for concrete immediate action. Unless 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 environmental disaster now unfolding all around us.

The challenge we face is straightforward: take real action to the evidence-based situation of our crisis or endure the consequences of this deep ethical lapse for generations ahead.