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While world leaders assemble in the Brazilian Amazon for Cop30, it is essential to assess our collective progress in lowering worldwide emissions of greenhouse gases.

In spite of three decades of UN climate summits, nearly 50% of the carbon dioxide accumulated in the atmosphere after the dawn of industrialization has been released since 1990. Incidentally, 1990 was the release of the initial scientific evaluation by the IPCC, which confirmed the threat of human-caused global warming. While researchers work on the Seventh Assessment Report, they do so knowing that their work remains eclipsed by political influences. Regardless of well-intentioned efforts, the planet is remains far from the path to prevent catastrophic climate change.

Unprecedented CO₂ Levels and Fossil Fuel Dependency

Latest figures indicate that atmospheric carbon dioxide levels hit a new peak of 423.9 ppm in 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 the combustion of carbon-based energy sources, while the remaining 10% was due to land-use changes such as forest clearance and forest fires.

While the rise in fossil CO₂ emissions in recent times was driven by higher use of gas and oil—accounting for more than 50% of worldwide discharges—coal burning also attained a record high, making up forty-one percent. In spite of Cop28’s global stocktake urging nations to transition away from fossil fuels, collective plans still aim to extract over twice the amount of hydrocarbons in 2030 than is consistent with limiting global warming to 1.5C, with ongoing drilling of gas justified as a less polluting bridge fuel.

The Mirage of Nature-Based Solutions

Instead of concentrating on economic incentives to speed up the phase-out of carbon fuels, climate policies are overly dependent on feel-good eco-positive approaches that aim to neutralize carbon emissions by planting trees instead of cutting industrial emissions. Although protecting, expanding, and rehabilitating natural carbon sinks like woodlands and wetlands is beneficial in itself, research has demonstrated that there is insufficient territory to achieve the worldwide target of net zero emissions using ecological methods alone.

Approximately one billion hectares—a territory bigger than the USA—is required to fulfill carbon neutrality commitments. More than forty percent of this land would need to be converted from current applications like agriculture to carbon sequestration projects by the year 2060 at an never-before-seen pace.

Although this ideal restoration could be achieved, forests take time to mature and can burn down, so they should not be viewed as a quick or lasting CO2 retention method, particularly in a fast-changing environment. As severe temperatures and aridity affect more of the planet, these sincere attempts could literally be destroyed by fire.

The Diminishing of Planetary Absorbers

Scientific evidence tells us that about half of the carbon dioxide released annually stays in the air, while the rest is taken up by seas and land ecosystems. With global heating, these environmental absorbers are losing efficiency at capturing CO₂, which means that additional CO2 builds up in the air, further exacerbating global warming. Shifting the reduction responsibility onto the land sector simply relieves the oil and gas sector from the pressure to reduce emissions in the near future.

The Carbon Debt and Coming Populations

Reaching net zero by 2050 requires carbon dioxide removal (CDR), which currently depends largely on terrestrial methods to soak up surplus CO2 from the air. Emitting companies can easily purchase offsets to compensate for their emissions and proceed with normal operations. Meanwhile, the energy imbalance caused by the combustion of hydrocarbons continues to further destabilise the Earth’s climate. Essentially, we are increasing our climate liability to our global account, leaving our descendants with an unpayable liability.

To limit the scale and length of overshoot the global warming targets, the world ultimately needs to go well beyond the balancing impact of net zero and begin to remove cumulative historical emissions to achieve a carbon-negative state.

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 5% of annual fossil carbon dioxide emissions, while technology-based CDR accounts for only about one-millionth of the CO2 emitted from fossil fuels. Optimistic industry estimates suggest around zero point one percent of total global emissions. Without meaning to be controversial, the political distortion of net zero is an insidious loophole that takes focus away from the scientific imperative to eliminate the primary cause of our warming world—fossil fuels.

The Urgent Need for Concrete Action

Although this scientific reality should dominate discussions at the climate summit, history indicates that gradual, cautious steps and political kowtowing will win out. Vague statements of long-term goals will keep on delay the urgent need for concrete immediate action. Until 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 atmosphere, 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 consequences of this deep ethical lapse for centuries to come.