Named one of Foreign Policy's "100 Top Global Thinkers" in 2012, legendary climate scientist James E. Hansen, the maverick former head of NASA’s Goddard Institute of Space, was the first to issue the clearest warning of about the dangers of global warming. Stepping down from his post on April 1 to engage full time in raising public awareness of global warming, Hansen, as environmental activist Bill McKibben recently noted, will continue to conduct "the most important science on the most important question that there ever was."
Talk recorded April 25, 2013 as part of the World Affairs Council of Oregon's International Speaker Series; Arlene Schnitzer Concert Hall, Portland, OR
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