A picture made available 29 December 2015 shows Scientists measuring the solar radiation, at the Glaciar Union camp in the Antarctica, 18 November 2015. The ozone hole has reached a record size with 10 squared kilometers in December 2015, more than the double of the average of the season, according to data published on 28 December 2015 by the University of Santiago de Chile (Usach). (Photo by Felipe Trueba/EPA)
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