A picture from 1940 (top) shows the Chacaltaya glacier and ski area in Bolivia, which looked rather different in 2005 (bottom). Records of glaciers melting join thousands of other data sets in a new analysis of the impacts of climate change.
Credit: IPCC
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Coverage of the 2013 American Association for the Advancement of Science meeting
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Tables of contents, columns and FAQs on SN Prime for iPad
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