Sahara made slow transition from green to desert: study

Agence France-Presse: The Sahara became the world's biggest hot desert some 2,700 years ago after a very slow fade from green, according to a new study which clashes with the theory that desertification came abruptly. Six thousand years ago, the massive arid region dominating northern Africa was quite green, a patchwork of trees and savannas as well as many sparkling lakes. The region, larger than Australia, also was inhabited, according to the European-US-Canadian team of scientists behind a study ... Read »

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