WMO reports GHG concentrations at highest in 800K years
Green Car Congress
OCTOBER 31, 2017
ppm in 2015 because of a combination of human activities and a strong El NiƱo event. Concentrations of CO 2 are now 145% of pre-industrial (before 1750) levels, according to the Greenhouse Gas Bulletin. Concentrations of CO 2 are now 145% of pre-industrial (before 1750) levels. parts per million in 2016, up from 400.00
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