Super-scientist Kevin Trenberth from the U.S. National Center for Atmospheric Research talks hot oceans, stronger hurricanes (like Dorian), and Greenland melting 2 to 3 times faster than scientists thought possible. Kevin makes a surprising announcement about his own future: this famous scientist is leaving Trump’s America, as the United States of Denial guts climate regulations. UK climate Professor Edward Hanna explains the forces behind the disastrous melting on Greenland.