climate scientists have predicted global temperatures would increase more than one degree celsius by 2020," but observed temperatures have been only half as high.
climate scientists have predicted global temperatures would increase more than one degree celsius by 2020," but observed temperatures have been only half as high.
global issue:105
in the last 100 years, earth's average surface temperature increased by about 0.8 °c (1.4 °f) with about two thirds of the increase occurring over just the last three decades.