GlobalPost: Human-driven climate change is to blame for extreme heat and drought seen in the US, Europe and other regions in recent years, a top NASA scientist has said. James Hansen, who directs the NASA Goddard Institute for Space Studies, added in a Washington Post editorial that even his "grim" predictions of a warming future, delivered before the US Senate in 1988, were too "optimistic." "I have a confession to make: I was too optimistic," Hansen wrote. "My projections about increasing global temperature...
URL: http://www.globalpost.com/dispatch/news/science/120804/james-hansen-climate-change-heat-drought-us-europe-nasa
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