New archaeological discoveries have shown that humans are capable of surviving in the most extreme conditions
The fossilized bones of a giant, extinct armored mammal provide the latest clue about when humans arrived in South America. At the time, in the late Pleistocene, numerous large animals inhabited the harsh, cold landscape, including giant sloths, mastodons, and saber-toothed cats. Humans were well-adapted to drought and resource scarcity, able to move along dry riverbeds in search of pools and the prey that grazed around them. The authors call this a “blue highway” that operated during the harshest periods.