Heat-trapping carbon pollution drops, but scientists cite Iran war rather than energy progress

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Global fossil-fuel carbon dioxide emissions totaled 42.2 billion tonnes in 2026, down 0.4% from the previous year, according to the Global Carbon Project. Scientists attributed the decline to the Iran war rather than meaningful progress in the energy transition.

In 2026, the world emitted 42.2 billion tonne of heat-trapping carbon dioxide from the burning of fossil fuels such as coal, oil and gas. It's a 0.4% decrease from last year, according to the scientists of the Global Carbon Project