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Last broadcast 29 Dec 2008, 20:40 on BBC HD (see all broadcasts).
Synopsis:
Documentary series which celebrates our planet in all its glory, both its spectacular scenery and its captivating natural history.
This edition looks at deserts, which cover a third of the Earth's land surface. From space they appear lifeless but a closer look reveals a different picture, from Mongolia's Gobi desert where wild Bactrian camels have to eat snow in lieu of water, to the Atacama in Chile where guanacos survive by licking the dew off cactus spines.
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