UN Climate Panel Amends CO2 Estimates for Policy Makers
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A United Nations climate panel that was criticized after a 2007 study overstated the rate of glacial melting backtracked on global carbon-emissions estimates.
The UN Intergovernmental Panel on Climate Change cut its estimate of total emissions since 1870 to 515 billion metric tons, or 515 gigatons, from 531 gigatons, according to a document released this week. It raised its calculation of total carbon emissions since 1750 to 555 gigatons from 545 gigatons.