Carbon flow, stock and budget according to the recent Geneva Report on Climate and Debt: Annual global CO2 emissions from fossil fuel and industry: 40 gigatonnes. Cumulative historical emissions since 1850: 2400 gigatonnes. They are responsible for a temperature rise of 1 degree Celsius. Remaining carbon budget given 1.5 degree Celsius temperature rise cap: 300 gigatonnes.
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