National Geographic: Recent heat waves that have triggered wildfires, droughts, and heat-related deaths in the United States and around the globe "almost certainly would not have occurred" without global warming-and will become more routine in coming years, NASA climate scientist James Hansen says. A new study examining six decades of global temperature data concludes that a sharp increase in the frequency of extremely hot summers can only be the result of human-caused global warming. ee an interactive map of global...
URL: http://news.nationalgeographic.com/news/2012/08/120803-global-warming-hansen-nasa-heat-waves-science/
Enclosure: http://images.nationalgeographic.com/wpf/media-live/photos/000/578/overrides/droughts-heat-waves-caused-climate-change-hansen_57868_600x450.jpg
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