A critical concern for the planet today is global warming and its probable consequences, and whether warming trends are occurring because of greenhouse gases in the atmosphere or a cyclical change in the weather. Explorers accurately measure the thickness of the Arctic ice as loss of sea ice contributes to ocean warming, the rise of sea levels, and affects polar species. Global warming kills coral reefs in the tropics and melts glaciers in Bolivia and Germany, threatening the supply of fresh water. Photographers document the effect of climate change on our environment. The program investigates this global issue from the polar Arctic to the polar Antarctic. A Production of Film Ideas.

Originally released by Film Ideas, 2008. Streaming video file encoded with permission for digital streaming by Infobase on March 10, 2015.

Polar Troubles (5:13); --Coral Reefs (2:00); -- Glacier (3:00); -- Focus on Climate Change (3:43); -- Polar Trek (4:26); -- German Glacier (2:47); -- Credits: Global Warming: Green Matters- What in the World is Going on? (0:33); .