October 16, 2014 The power of science and pervasiveness of technology puts scientists in a position of unique responsibility that can make political activism very slippery, says commentator Adam Frank.
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NASA scientist and climatologist James Hansen in 2009.
Christopher Furlong/Getty Images
April 2, 2013 But the man who issued one of the earliest warnings about the potential for global warming isn't going away. He plans to concentrate on his environmental activism efforts.
Climate change as predicted in 1981. Grey shows predictions from global temperature rise via computer models run of Hansen et al 198. Red shows real world data taken since paper was published.
Geert Jan van Oldenborgh and Rein Haarsma, KNMI, RealClimate
July 17, 2012 The basic principles of climate science have been mature for a while.
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