Polar ice sheets melting – in pictures
Ice sheets covering Greenland and Antarctica are melting three times faster today than they were in the 1990s, according to a ‘definitive’ study of satellite data. These pictures show the different ways that melting occurs
Email- guardian.co.uk, Thursday 29 November 2012 19.00 GMT
Each summer, streams channel much of the melt that is produced by the warmer temperatures along lower levels of the Greenland ice sheetPhotograph: Courtesy Ian Joughin/AAAS
