To the untrained eye, all evidence here in the heart of the Amazon signals virgin forest, untouched by man for time immemorial – from the ubiquitous fruit palms to the cry of howler monkeys, from the air thick with mosquitoes to the unruly tangle of jungle vines.  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.

Advanced Amazon Civilization, 9/6/10

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