The concept of net zero is a dangerous distraction, diverting us from the urgent need to eliminate fossil fuels. As we gather for Cop30 in the Amazon, it's time to confront the harsh reality of our climate crisis. Despite decades of climate summits, we've only accelerated our emissions, with half of all industrial-era carbon dioxide emitted since 1990. This is the year the IPCC's Seventh Assessment Report is being prepared, yet politics still overshadows science. The world is dangerously off course to prevent catastrophic climate change.
In the lead-up to Cop30, the World Meteorological Organization's report reveals a shocking surge in CO2 concentrations, reaching an unprecedented high of 423.9 parts per million in 2024. The growth rate from 2023 to 2024 was the largest yearly increase on record. The Global Carbon Project's data shows that 90% of global CO2 emissions in 2024 came from burning fossil fuels, with the remaining 10% from land-use changes.
Despite calls to transition away from fossil fuels, plans to produce double the amount of fossil fuels by 2030 persist. The burning of coal reached a record high, accounting for 41% of emissions. The energy sector's reliance on gas as a "transition fuel" is a rationalization that ignores the urgency of the climate crisis.
Instead of focusing on rapid fossil fuel phase-out, climate policies emphasize feel-good "nature positive" solutions, essentially planting trees to offset industrial emissions. While protecting and expanding natural carbon sinks is important, researchers warn that there isn't enough land to achieve net zero solely through nature-based solutions.
Achieving net zero pledges would require converting over 1 billion hectares of land, an area larger than the US, from existing uses like food production to carbon sequestration projects by 2060. This is an unprecedented and unrealistic rate of conversion. Even if this regenerative vision were achievable, forests take time to mature and can be destroyed by wildfires, making them an unreliable long-term carbon storage solution, especially in a rapidly changing climate.
Science tells us that half of annual CO2 emissions remain in the atmosphere, with the rest absorbed by oceans and land ecosystems. As the planet warms, these natural carbon sinks become less effective, leading to more carbon in the atmosphere and further global warming. Shifting the mitigation burden to the land sector relieves the fossil fuel industry of the pressure to reduce emissions.
Net zero by 2050 relies on carbon dioxide removal (CDR), which currently focuses on land-based measures. Polluters can buy carbon credits and continue business as usual. The energy imbalance caused by fossil fuels continues to destabilize the Earth's climate. We're accumulating carbon debt on our planetary credit card, leaving future generations with an unpayable liability.
To limit the magnitude and duration of overshooting Paris Agreement temperature goals, the world needs to go beyond net zero and achieve "net negative emissions" by drawing down cumulative historical emissions. Vegetation-based CDR currently absorbs only about 5% of annual fossil carbon dioxide emissions, while technology-based CDR is negligible. Industry estimates are more generous, but still only around 0.1% of total global emissions.
The political distortion of net zero is an insidious loophole that distracts from the scientific imperative to eliminate fossil fuels, the primary cause of our overheating planet. This scientific reality should dominate discussions at Cop30, but history suggests polite incrementalism and political compromises will prevail. Vague statements of future ambition will delay the urgent need for immediate action.
The dilemma is clear: respond to the scientific reality of our predicament or face the consequences of this moral failure for centuries. The choice is ours.
