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While world leaders assemble in the Brazilian Amazon for Cop30, it is crucial to assess how we are faring together in reducing worldwide emissions of greenhouse gases.

In spite of three decades of UN climate summits, nearly 50% of the CO2 built up in the atmosphere since the Industrial Revolution has been released since 1990. Coincidentally, 1990 was the release of the First Assessment Report by the IPCC, which verified the danger of anthropogenic climate change. While researchers prepare the Seventh Assessment Report, they do so aware that their work remains eclipsed by political influences. Despite sincere attempts, the world is remains dangerously off track to avert dangerous global warming.

Unprecedented CO₂ Levels and Carbon-Based Fuel Dependency

Latest figures indicate that atmospheric carbon dioxide levels reached a new peak of 423.9 ppm in 2024, with the increase rate from the previous year surging by the biggest annual rise since modern measurements began in the late 1950s. According to the international carbon monitoring initiative, 90% of total global CO₂ emissions in 2024 originated from burning fossil fuels, while the remaining 10% resulted from alterations in land use such as deforestation and forest fires.

While the rise in fossil CO₂ emissions in 2024 was propelled by higher use of gas and oil—accounting for more than 50% of worldwide discharges—the use of coal also reached a record high, making up 41%. Despite Cop28’s global stocktake calling for nations to transition away from fossil fuels, collective plans still intend to produce more than double the quantity of fossil fuels in 2030 than is consistent with keeping global warming to 1.5C, with ongoing drilling of natural gas justified as a less polluting transition fuel.

The Illusion of Eco-Friendly Measures

Rather than focusing on financial motivators to speed up the elimination of carbon fuels, climate policies are heavily reliant on feel-good eco-positive approaches that seek to cancel out carbon emissions by afforestation rather than reducing industrial emissions. While protecting, expanding, and restoring ecological absorbers like woodlands and marshes is inherently good, research has demonstrated that there is insufficient territory to achieve the global goal of carbon neutrality using nature-based solutions by themselves.

Approximately 1 billion hectares—an area larger than the United States of America—is needed to meet net zero pledges. Over 40% of this land would need to be transformed from existing uses like agriculture to carbon sequestration projects by the year 2060 at an never-before-seen pace.

Although this ideal restoration could be realized, woodlands require years to grow and can burn down, so they cannot be considered as a quick or permanent carbon storage solution, especially in a fast-changing climate. As extreme heat and dryness engulf more of the planet, these sincere attempts could actually be destroyed by fire.

The Weakening of Planetary Absorbers

Scientific evidence tells us that about 50% of the total CO₂ emitted each year remains in the atmosphere, while the remainder is taken up by oceans and terrestrial systems. With global heating, these natural carbon sinks are becoming less effective at capturing CO₂, meaning that more carbon accumulates in the atmosphere, further exacerbating global warming. Shifting the reduction responsibility onto the agricultural and forest sectors effectively excuses the fossil fuel industry from the pressure to reduce emissions any time soon.

The Carbon Debt and Coming Populations

Achieving net zero by 2050 requires carbon dioxide removal (CDR), which currently relies almost exclusively on land-based measures to soak up surplus CO2 from the atmosphere. Polluters can simply purchase offsets to compensate for their emissions and continue with business as usual. At the same time, the energy imbalance caused by the combustion of hydrocarbons keeps on further disrupt the global climate system. In effect, we are increasing our climate liability to our global account, passing on future generations with an insurmountable burden.

To limit the magnitude and length of exceeding the global warming targets, the world ultimately needs to go well beyond the neutralising effect of net zero and begin to remove cumulative historical emissions to achieve a carbon-negative state.

The Policy Misrepresentation of Net Zero

Based on the most recent data from the Global Carbon Project, plant-based carbon removal is presently absorbing the equal of about 5% of annual fossil carbon dioxide emissions, while technology-based CDR represents only about one-millionth of the CO2 emitted from carbon sources. More generous industry estimates place it at around zero point one percent of worldwide CO2 output. At the risk of sounding like a heretic, the political distortion of net zero is an insidious loophole that takes focus away from the scientific imperative to eradicate the main source of our warming world—carbon-based energy.

The Urgent Need for Concrete Action

Although this scientific reality should dominate talks at the climate summit, history suggests that polite incrementalism and political kowtowing will win out. Vague statements of future ambition will keep on postpone 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 challenge we face is straightforward: take real action to the scientific reality of our crisis or endure the results of this profound moral failure for centuries to come.