May 212013
Forecast global temperature rise of 4C a calamity for large swaths of planet even if predicted extremes are not reached.
from The Guardian
"Some of the most extreme predictions of global warming are unlikely to materialise, new scientific research has suggested, but the world is still likely to be in for a temperature rise of double that regarded as safe.
"The researchers said warming was most likely to reach about 4C above pre-industrial levels if the past decade's readings were taken into account.
"That would still lead to catastrophe across large swaths of the Earth, causing droughts, storms, floods and heatwaves, and drastic effects on agricultural productivity leading to secondary effects such as mass migration. …"
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