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Enlarge / Lake Huila records centuries of environmental change in the Quijos Valley. (credit: Nicholas Laughlin) On the slopes of northern Ecuador’s Quijo Valley, perpetual clouds shroud the canopy of a seemingly pristine tropical forest. But the beauty of the cloud forest hides a violent, tragic history. A new study of sediments from the valley’s […]
Enlarge (credit: Alyson Thibodeau et al.) New chemical analysis of Aztec turquoise artifacts suggests the stone didn’t come from the Southwestern US as archaeologists have long thought, which raises questions about the scale of long-distance trade between the Aztecs and their northern neighbors. For thousands of years, societies from Central America to the Southwestern US […]
Enlarge / A sapodilla, one of the fruits used by the native inhabitants of Central America. (credit: Wikimedia Commons) Prehistoric humans helped spread edible fruit species across Central and South America, even as they wiped out the megafauna that had done so previously. In the process, we maintained and even expanded the plants’ habitats, increased […]
