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As global leaders gather in the Brazilian Amazon for the 30th UN Climate Change Conference, it is vital to review how we are faring together in lowering global greenhouse gas emissions.

In spite of three decades of United Nations climate conferences, nearly 50% of the CO2 built up in the atmosphere after the dawn of industrialization has been emitted after the year 1990. Coincidentally, 1990 marked the publication of the First Assessment Report by the IPCC, which confirmed the threat of human-caused global warming. As scientists work on the upcoming IPCC report, they do so knowing that scientific findings remains eclipsed by political agendas. Regardless of well-intentioned efforts, the world is remains dangerously off track to avert catastrophic climate change.

Record-Breaking CO₂ Levels and Fossil Fuel Dependency

Latest figures indicate that CO₂ concentrations reached a new peak of 423.9 parts per million in 2024, with the growth rate from 2023 to 2024 surging by the largest yearly increase since modern measurements began in the late 1950s. According to the international carbon monitoring initiative, 90% of worldwide carbon dioxide output in last year originated from the combustion of carbon-based energy sources, while the remaining 10% was due to land-use changes such as deforestation and forest fires.

While the increase in fossil CO₂ emissions in 2024 was driven by increased use of gas and oil—representing more than 50% of global emissions—the use of coal also reached a record high, making up 41%. In spite of Cop28’s global stocktake urging nations to transition away from fossil fuels, collective plans still intend to produce more than double the amount of hydrocarbons in 2030 than aligns with limiting global warming to 1.5C, with continued extraction of natural gas justified as a less polluting bridge fuel.

The Mirage of Nature-Based Solutions

Instead of concentrating on economic incentives to accelerate the phase-out of carbon fuels, environmental strategies are overly dependent on feelgood eco-positive approaches that aim to neutralize carbon emissions by afforestation instead of cutting factory discharges. Although conserving, expanding, and restoring natural carbon sinks like woodlands and wetlands is inherently good, studies has demonstrated that there is not enough land to achieve the worldwide target of carbon neutrality using ecological methods alone.

Roughly 1 billion hectares—a territory bigger than the United States of America—is required to fulfill net zero pledges. Over forty percent of this area would need to be transformed from current applications like food production to carbon sequestration projects by 2060 at an unprecedented rate.

Even if this regenerative utopia could be realized, woodlands take time to mature and can burn down, so they should not be viewed as a quick or lasting CO2 retention method, especially in a rapidly shifting environment. As extreme heat and aridity engulf larger regions, these sincere attempts could actually go up in smoke.

The Diminishing of Natural Carbon Sinks

Research data indicates that about 50% of the total CO₂ emitted each year stays in the air, while the rest is taken up by oceans and terrestrial systems. With global heating, these natural carbon sinks are becoming less effective at soaking up CO₂, meaning that additional CO2 builds up in the air, intensifying climate change. Shifting the mitigation burden onto the land sector effectively excuses the oil and gas sector from the urgency to cut pollution any time soon.

The Climate Liability and Future Generations

Reaching net zero by 2050 requires carbon dioxide removal (CDR), which at present relies almost exclusively on land-based measures to soak up excess carbon from the atmosphere. Emitting companies can easily buy carbon credits to counterbalance their discharges and continue with normal operations. At the same time, the energy imbalance resulting from the combustion of hydrocarbons continues to further destabilise the global climate system. In effect, we are increasing our climate liability to our global account, leaving future generations with an insurmountable burden.

To limit the scale and length of overshoot the Paris Agreement temperature goals, the planet ultimately needs to surpass the balancing impact of carbon neutrality and begin to remove past carbon outputs 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 equivalent of about five percent of annual fossil carbon dioxide emissions, while technology-based CDR accounts for only about a tiny fraction of the CO2 emitted from carbon sources. Optimistic sector projections suggest around 0.1% of worldwide CO2 output. At the risk of sounding like a heretic, the political distortion of net zero is a deceptive gap that takes focus away from the scientific imperative to eradicate the primary cause of our overheating planet—carbon-based energy.

The Critical Requirement for Concrete Action

While this scientific reality should dominate discussions at Cop30, past events indicates that polite incrementalism and political kowtowing will win out. Ambiguous promises of long-term goals will continue to delay the urgent need for definite short-term measures. Unless leaders are brave enough to put a price on carbon to bring the era of fossil fuels to a definitive end, we are releasing more and more carbon to the atmosphere, compounding the physical catastrophe now unfolding across the globe.

The dilemma we confront is simple: take real action to the evidence-based situation of our crisis or suffer the consequences of this deep ethical lapse for centuries to come.