Network of fortified towns indicates Amazon was once heavily populated | Ars Technica - discu.eu

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Network of fortified towns indicates Amazon was once heavily populated https://arstechnica.com/science/2018/03/network-of-fortified-towns-indicates-amazon-was-once-heavily-populated/ 96 comments 29/3/2018

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Network of fortified towns indicates Amazon was once heavily populated. Dozens of new sites offer new insights on pre-Columbian earth-builders. https://arstechnica.com/science/2018/03/network-of-fortified-towns-indicates-amazon-was-once-heavily-populated/ 59 comments 29/3/2018 worldnews

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Fortresses, farmlands of the Maya emerge from massive LiDAR survey | Ars Technica https://arstechnica.com/science/2018/02/lasers-shed-some-light-on-the-maya-snake-kingdom/ 0 comments

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