Researchers
here say they have unearthed stone tools proving that humans reached
what is now northeast Brazil as early as 22,000 years ago.
Their discovery
adds to the growing body of research upending a prevailing belief of
20th-century archaeology in the United States known as the Clovis model,
which holds that people first arrived in the Americas from Asia about
13,000 years ago.
Read more and see video here...
http://www.nytimes.com/2014/03/28/world/americas/discoveries-challenge-beliefs-on-humans-arrival-in-the-americas.html?_r=0
See more interesting articles here...
http://ajarnmike.blogspot.ca/search/label/Native%20Americans