Stone tools unearthed in a cave in central Mexico and other evidence from 42 far-flung archeological sites indicate people arrived in North America earlier than previously known, upwards of 30,000 years ago.
If you want to change selection, open document below and click on "Move attachment"
Unknown title cultural layers in the cave. | Photo Credit: Devlin A. Gandy/ www.joh.cam.ac.uk The research also implicated humans in the extinctions of many large Ice Age mammals such as mammoths and camels. <span>Stone tools unearthed in a cave in central Mexico and other evidence from 42 far-flung archeological sites indicate people arrived in North America earlier than previously known, upwards of 30,000 years ago. Scientists said on Wednesday they had found 1,930 limestone tools, including small flakes and fine blades that may have been used for cutting meat and small points that may have been us
Summary
status
not read
reprioritisations
last reprioritisation on
suggested re-reading day
started reading on
finished reading on
Details
Discussion
Do you want to join discussion? Click here to log in or create user.