water

The Mekong river, which supports the livelihoods of about 60 million people in Southeast Asia, is at record-low water levels. China has built four of its planned eight hydroelectric dams on the upper Mekong. (2:44 min)

This concluding episode reveals, through time and isolation, how animals and plants on the Galapagos Islands have evolved in the most surprising ways to cope with the profound geological and climatic forces affecting them. (49 min)

David Attenborough narrates another gorgeously filmed BBC documentary, this time it’s about Life in the Deep Sea. (45 min)

The currents which circle the South Pacific support huge shoals and an incredible variety of life, but much of the center is an ocean desert. (55 min)

Lake Atitlan which thousands of Guatamalans depend on for food and transport is under threat. A dangerous algae has contaminated the waters, threatening to destroy not only the lake, but also the livelihoods of the people who rely on it. (2:44 min)

This film traces the great river Ganges through North India and explores the colourful natural history of the Gangetic Plains. (48 min, 5 segments)

Bhutan, the world’s newest democracy, is hoping to boost its economic prospects by by exporting electricity to India. As Tony Birtley reports, another six big hydro-electric projects are in the pipeline. (3:33 min)

A BBC visual feast of a journey in HD tracing the Ganges as it descends, cascades, flows into the sea, giving an abundance of life as it passes. (48 min, 5 segments)