Biggest contributors to climate change

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The United States contributed roughly 17 percent of global warming from 1850 to 2021. By contrast, India contributed five percent of warming during this period, despite the country having a far larger population than the United States. In total, G20 countries have contributed approximately three-quarter of global warming to date.

Distribution of historic contributions to global warming worldwide from 1850 to 2021, by country or region

Characteristic	Share of warming
United States	17%
China	12%
EU-27	10%
Russia	6%
India	5%
Rest of G20	22%
Rest of world	21%
Least developed countries	6%

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Release date

November 2023

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Region

Worldwide

Survey time period

1850 to 2021

Supplementary notes

Historic contributions to warming result from cumulative CO₂ emissions, but also estimated CH4, N₂O and F-gas emissions (cooling from aerosols is excluded, leading to a higher estimate of warming than currently observed). Totals are not complete for all categories and exclude, for example, international transport.

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