Polar Exploration and Observation (4:35); Characteristics of Polar Regions (3:09); Melting Ice (5:01); Effects of Climate Change (5:05); Amplification Effect (3:57); Disappearing Ice (2:20); Rise in Sea Level (4:16); Threats to Ecosystems (4:52); Other Threats of Global Warming (4:20); Methane (3:38); Gulf Stream (4:41); Unexpected Effects of Climate Change (3:58); Point of No Return (4:05); Credits: Red Ice ( -54:0-4);