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cover of the September 20, 2014 Science News


A little drier every day

The climate of the Sahara Desert shifted much more slowly than once thought

The Sahara didn’t become one of the hottest and driest regions on Earth in a hurry. In fact, the climate shift that made the desert so arid took many centuries — a finding that contradicts previous studies that hint at a relatively sudden drying. The new study could affect how scientists refine models of climate change.

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