so that means that probably about half, maybe half of that nine-tenths of the degree of total warming might be caused by greenhouse gases.
so that means that probably about half, maybe half of that nine-tenths of the degree of total warming might be caused by greenhouse gases.
scientific consensus on climate change:459
scientific consensus on climate change
the intergovernmental panel on climate change said the likelihood was 90 percent to 99 percent that emissions of heat-trapping greenhouse gases like carbon dioxide, spewed from tailpipes and smokestacks, were the dominant cause of the observed warming of the last 50 years.