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1.

The Arctic Circle [electronic resource]: On Thin Ice

For thousands of years, the only threat to polar bears came from humans. Nothing has changed-except now it is fossil fuel consumption, not spears and guns, that pushes Ursus maritimus toward extinction. Depicting the hapless species as the proverbial canary in a coal mine, this program studies the intensifying impact of climate change on the Arctic region. Viewers learn how the entire Arctic food chain, from tiny zooplankton to the ringed seal to the mighty polar bear, is under stress from ice depletion-and how severe drops in sea-ice thickness are related to the alarming appearance of meltwater channels and crevasse-like pits across glaciers in Norway and Greenland. Animated views of these anomalies help illustrate what is happening to the frozen landscape.
Online
2010; 2009
2.

Stemming the Flow of Water Pollution: Part 2 [electronic resource]

The Donana marshland. The oyster beds below Rio. The Caspian's sturgeon fishing grounds. The coral reefs of the South Pacific. This program travels to Spain, Brazil, Iran, and Fiji to observe efforts to mitigate severe ecological damage to these sensitive regions-places primarily spoiled by water pollution, with causes as varied as upland agricultural runoff and the rupture of a mine tailings dam. Solutions such as preservation legislation, riverbank reconstruction, the creation of artificial wetlands, cultivation of depleted species of marine life, and even voluntary anti-pollution compliance among commercial stakeholders are featured.
Online
2006; 2004