The deep history of cooperatives in America — the country's longest-surviving alternative economic system.

Presents the environmental effects of eating meat.

Kenyan farmer Moses Shaha journeys through the Tana Delta, where farmers are starting to grow jatropha, a biofuel crop.

Reveals the devastating impact of human activity on the ocean since we first settled along its coasts over 150,000 years ago.

Portrait of David Brower, America's leading environmentalist.

The first documentary to dramatize the history of American film criticism and to explore its role in the evolution of American film.

Writers, artists, and musicians celebrate the whale.

Inspirational distillation of the life, thoughts and legacy of famed Canadian scientist, broadcaster and activist, David Suzuki.

Filmmaker David Sieveking portrays the domestic care of his mother Gretel, who, like millions of others, is suffering from Alzheimer's disease.