This series explores the degradation of the world's grasslands, climate change on marine ecosystems, the increased spread of infectious diseases and the relationship between armed conflict and the environment.

Episode 1: Future Conditional - Looks at the spread of air and water pollution and how contamination in one area can affect people and animals living thousands of miles away.

Episode 2: Hot Zones - Examines how recent trends in globalization and the altering of ecosystems have led to dramatic increases in the spread of infectious diseases.

Episode 3: Seas of Grass - Shows the devastating environmental, political, and economic effects of the degradation of the world's grasslands.

Episode 4: On the Brink - Considers how environmental pressures can lead to terrorism and regional conflict.