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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
www.pbs.org/wgbh/nova/extremei... Remarkable time-lapse footage by James Balog, one of the world’s foremost nature photographers, reveals massive glaciers and ice sheets splitting apart,... 01:29
NASA Study Links Extreme Summer Heat to Climate Change 05:24
Global warming, rising seas. 16:19
Full Program: A descent through the hellish atmosphere of Venus to explore its broiling surface serves as a warning to our world about the possible consequences of the increasing greenhouse effect. 01:01:05