Global CO2 emissions dip 0.4% in 2026, but Iran war oil shock drives the drop, not climate policy

The Global Carbon Project reports that worldwide fossil fuel carbon dioxide emissions fell 0.4% in 2026 to 42.2 billion tons. Oil emissions dropped nearly 2% and natural gas fell 0.3%, while coal emissions rose 0.6%. Scientists attribute the decline to the Iran war closing the Strait of Hormuz, which spiked oil prices and cut demand, not to successful climate action. This is only the third drop this century, following the 2009 recession and the 2020 pandemic, and past recoveries have bounced back to prior levels. China's emissions fell about 1%, raising hopes that its peak may be near, while India's rose 4.4%. Overall global CO2 emissions, including land use changes, actually increased 1% due to deforestation and peat fires. The study was presented at UN climate talks in Antalya, Turkey, and published in Earth System Science Data Discussions and Nature Climate Change. Experts warn that the drop is fragile and that oil-producing nations may expand drilling elsewhere, dampening any lasting benefit.