Photo Gallery Paradise in the Middle of the Sahara

A marvel of nature, the lakes of Ounianga in the Sahara Desert have lasted thousands of years and withstood dramatic climate change. Now, a German geologist has analyzed lakebed sediments to shed light on a spectacular chapter in human history.
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Foto: Corbis
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Foto: Corbis
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Foto: Johann Grolle/ DER SPIEGEL
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Foto: Corbis
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Foto: NASA