Arabians used same toolmaking techniques as Native Americans

Archaeologists have rewritten the history books over when humans first arrived in the Americas, shifting the date of the initial migration 15,000 years back in time. 
Excavations in a cave in Mexico called Chiquihuite revealed archaeological evidence of …Archaeologists have rewritten the history books over when humans first arrived in the Americas, shifting the date of the initial migration 15,000 years back in time. 
Excavations in a cave in Mexico called Chiquihuite revealed archaeological evidence of …