More signs emerge of New World settlers before 20,000 years ago
South American site yields controversial tools of pre-Clovis campers
NEW WORLD ROCKS Shown from different angles, three simple stone tools unearthed in Brazil belong to a set of finds suggesting that people reached South America around 24,000 years ago (3) and again about 15,000 years ago (1 and 2).
E. Boëda et al/Antiquity 2014