BBC - Nature's Microworlds (2012) Part 5 Okavango

Steve Backshall looks at some of the world's most iconic ecosystems.

Part 5 Okavango

Steve Backshall tries to discover just what makes it possible for a river to stop in the middle of a desert. The Okavango is the world's largest inland delta and home to one of Africa's greatest congregations of wildlife, and in asking the difficult questions Steve reveals the astounding secret to its existence.

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