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The politically correct answer is all countries are responsible for GHG emissions. However the top contributors of carbon dioxide in 2010 are:

World total: 27 Billion tonnes/ year

USA : 6 Billion tonnes/year (22.2%)

China: 5 Billion tonnes/year (18.4 %)

European Union: 4 Billion tonnes/year (14.7%)

All the rest of the world (+150 countries) produces the other 50% of the carbon dioxide

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14y ago

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