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. nytimes/2014/03/28/world/americas/discoveries-challenge-beliefs-on-humans-arrival-in-the-americas.html?smid=fb-nytimes&WT.z_sma=WO_DCB_20140328&bicmp=AD&bicmlukp=WT.mc_id&bicmst=1388552400000&bicmet=1420088400000&_r=2
Posted on: Fri, 28 Mar 2014 20:41:04 +0000
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