Breaking News U.S. Edition U.S. International Arabic Español Set edition preference Confirm Sign in News U.S. World Politics Tech Health Entertainment Living Travel Money Sports Video CNNgo Latest News Must Watch Videos Digital Studios TV CNNgo Schedule CNN Films Shows A-Z Anchors and Reporters A-Z Opinions Political Op-Eds Social Commentary iReport More… Photos Longform Investigations CNN profiles A-Z CNN Leadership The Wonder List Morgan Spurlock: Inside Man City of Tomorrow Finding Jesus The Guns Project Digital Shorts Change the List CNN Heroes Impact Your World Quick Links Photos Longform Investigations CNN profiles A-Z CNN Leadership By Jethro Mullen , CNN Updated 11:23 AM ET, Wed March 18, 2015 NASA video shows ice melt in Antarctica replay More Videos ... NASA video shows ice melt in Antarctica 02:01 New study reveals openings that threaten huge glacier with warm water Totten G...