A general view taken on August 25, 2014 shows a crater on the Yamal Peninsula, northern Siberia. Russian scientists have now discovered seven giant craters in remote Siberia, the deputy director of the Oil and Gas Research Institute of the Russian Academy of Sciences, Vasily Bogoyavlensky, told AFP on March 12, adding that the mysterious phenomenon was believed to be linked to climate change. AFP PHOTO / VASILY BOGOYAVLENSKY (Photo credit should read VASILY BOGOYAVLENSKY/AFP via Getty Images)
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AFP VASILY BOGOYAVLENSKY