Strange Days On Planet Earth

Troubled Waters (1x4)

Air date: Apr 27, 2005

Frogs are vanishing in America’s heartland. Canadian beluga whales are mysteriously dying in the Saint Lawrence River. Swarms of sea stars are overrunning parts of Australia's Great Barrier Reef. Are these signals that something is amiss in Earth’s water – from our marshes to the sea? Has water become a massive delivery system for pollutants?