“What do the Sahara desert and the Amazon rainforest have in common? Until recently, archaeologists would have told you they were both inhospitable environments devoid of large-scale human settlements. But they were wrong. Here today at the annual meeting of the AAAS (which publishes Science), two researchers explained how remote sensing technology, including satellite imaging and drone flights, is revealing the traces of past civilizations that have been hiding in plain sight.”

Source: news.sciencemag.org

Link to abstract:

https://aaas.confex.com/aaas/2015/webprogram/Session9535.html