Natural World Heritage sites under growing threat, but bright spots remain

Botswana’s fertile Okavango Delta is one of the last remaining high-biodiversity ecosystems in the world, home to cheetahs, African wild dogs, baobab trees, crocodiles, termites and owls that catch fish. Roughly the size of the state of Connecticut, the freshwater Okavango Delta opens into an enormous alluvial fan that stretches up to 5,800 square miles (15,000 square km) into the Kalahari Desert. The area is so vast it can be seen from space, but most people have never heard of it.

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