'Greenland is Melting' - Greenland recorded its highest temperatures ever in 2013. Though some say that's not cause for concern, the equivalent of three Chesapeake Bays'-worth of water melts off the island every year, affecting sea levels around the world. Shane Smith embarks on an expedition to Greenland with climate scientist Jason Box to discover the reasons for the melting, and how the resulting sea level rise will mean devastation sooner than expected.