Discovery
The size of the United States, the Sahara in the northern part of Africa is the toughest region to survive. Covering one third of the continent, sandstorms stretch for a thousand miles and rain may not fall here for 50 years.
Some creatures, like the naked mole rat, avoid the heat by living a bizarre, underground existence. Tiny barn swallows must navigate thousands of miles of barren sand to find a single life-saving oasis. But the silver ant, making its global debut in Africa (Discovery, 10pm) , is specially designed to take on the midday sun due to its special "metal jacket" of silver hairs that reflects the sun's brutal rays.
And with the help of five solar-powered cameras left in the Tunisian desert for 20 months - thought to be the longest time lapse footage ever - watch as the sand dunes shift and take shape.
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