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Katharine Hayhoe is a Research Associate Professor of Atmospheric Sciences at Texas Tech University. In addition to doing cutting-edge research on climate change, Katharine is also a "climate change... 08:07
Head to the foothills of the Himalayas, where Nepalese farmers are enjoying surprisingly good farming these days thanks to a disturbingly bad new reality: The glaciers are disappearing. 02:53
Full Program: So you think global warming won't affect you? 26:09
World Business: As Director of the Earth Institute at Columbia University, Jeffrey Sachs is one of the world's foremost experts on sustainable economics. Professor Sachs was also Director of the... 06:34
Global warming, rising seas. 16:19