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Archaeologists working with Indigenous communities are revealing the footprints of vast ghost cities. It is now thought the pre-Columbian Amazon was inhabited by millions of people living in large built-up areas with road networks, temples, and pyramids.
How ghost cities in the Amazon are rewriting the story of civilisationwww.newscientist.com Remote sensing, including lidar, reveals that the Amazon was once home to millions of people. The emerging picture of how they lived challenges ideas of human cultural evolution
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I can't help but wonder if they fell like Rome, when a "Senate" lost its spine, corruption was rampant, members acted in self-interest? OK, I was really thinking of our possible futures.