1.
2.
Why did Clovis toolmakers choose difficult quartz crystal?
(news.ycombinator.com)
3.
Monte Verde site gets a new date, but the big picture doesn't change
(arstechnica.com)
4.
Study pinpoints when bow and arrow came to North America
(arstechnica.com)
5.
New dating for White Sands footprints confirms controversial theory
(news.ycombinator.com)
6.
New dating for White Sands footprints confirms controversial theory
(arstechnica.com)
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