Ver a matéria completa neste link:
http://www.nytimes.com/2014/03/28/world/americas/discoveries-challenge-beliefs-on-humans-arrival-in-the-americas.html?hp&_r=0
Daniel Berehulak for The New York Times
SERRA DA CAPIVARA NATIONAL PARK JOURNAL
Discovery Upends Human Migration Theory
By SIMON ROMERO
Archaeologists say humans reached what is now northeast Brazil as early as 22,000 years ago, upending a prevailing belief of 20th-century archaeology.