Amazon rainforest once looked more like savannas of Africa than a jungle

Posted by LiveScience: Stephanie Pappas on July 8th, 2014
LiveScience: A series of square, straight and ringlike ditches scattered throughout the Bolivian and Brazilian Amazon were there before the rainforest existed, a new study finds. These human-made structures remain a mystery: They may have been used for defense, drainage, or perhaps ceremonial or religious reasons. But the new research addresses another burning question: whether and how much prehistoric people altered the landscape in the Amazon before the arrival of Europeans. "People have been affecting......

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