Truthdig: Two separate studies have confirmed the extent of human influence on climate change-and, for once, carbon dioxide is not the usual suspect.
One team has just found that air pollution dimmed the skies of northern Europe, reflected sunlight back into space, reduced evaporation, and increased river flow.
The second group reports that similar aerosol pollution had a quite different effect on the Asian monsoons: in the second half of the 20th century, the darkening skies reduced temperatures and...