Global carbon emissions dip 0.4% in 2026, but Iran war oil shock drives the drop, not climate policy

New data from the Global Carbon Project shows global fossil fuel CO2 emissions fell 0.4% in 2026 to 42.2 billion tons. The drop is largely attributed to the Iran war closing the Strait of Hormuz, which spiked oil prices and cut oil use. Coal emissions actually rose 0.6%, while oil fell nearly 2% and gas dropped 0.3%. This is the third emissions dip this century, following the 2009 recession and 2020 pandemic, but experts warn it may not last once oil supply recovers. China's emissions dropped about 1%, sparking hope that its peak may be near, but India's rose 4.4%. Overall CO2 including land use changes went up 1% due to deforestation and peat fires. The report was presented at UN climate talks in Antalya, Turkey. The key takeaway: this decline is not a structural shift to clean energy, and without policy that locks in reductions, emissions are likely to rebound.