United States Has Released the Most Greenhouse Gases Over Time

Countries with the highest cumulative greenhouse gas emissions from 1850 to 2024, in millions of metric tons of CO₂ equivalent (MMTCO₂e)

United States has released the most greenhouse gases cumulatively between 1850 and 2021, far outpacing China's emissions over the same time period.

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Greenhouse gas emissions data includes CO2, CH4, N20, HFCs, PFCs and SF6, but excludes land use, land-use change, and forestry.