Amazon Once Held As Many As 20 Million People, Scientists Believe

09/06/2010 10:49 am ET | Updated May 25, 2011
  • Juan Forero Washington Post

Archaeologists, many of them Americans, say the opposite is true: This patch of forest, and many others across the Amazon, was instead home to an advanced, even spectacular civilization that managed the forest and enriched infertile soil to feed thousands.

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