As the Arctic heats up twice as fast as the rest of the world and sea ice and snow declines rapidly, polar bears will struggle to survive, according to a US government report published on Monday.
원문출처 : http://www.cnn.com/2017/01/10/world/polar-bears-arctic-climate-change/index.html
원문출처 : http://www.cnn.com/2017/01/10/world/polar-bears-arctic-climate-change/index.html