Newfound ancient African megadroughts may have driven the evolution of humans and fishes

From 135,000 to 90,000 years ago tropical Africa had megadroughts more extreme and widespread than any previously known for that region, according to new research.

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<p><a href="http://www.physorg.com/news111083381.html">Newfound ancient African megadroughts may have driven the evolution of humans and fishes</a></p> <p>From 135,000 to 90,000 years ago tropical Africa had megadroughts more extreme and widespread than any previously known for that region, according to new research.</p>