An aerial view from onboard a helicopter 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. (Photo by VASILY BOGOYAVLENSKY/AFP/Getty Images)
