Friday, March 2, 2018

When Did Americans Stop Marrying Their Cousins? Ask the World’s Largest Family Tree

When Did Americans Stop Marrying Their Cousins? Ask the World’s Largest Family Tree

By STEPH YIN from NYT Science http://ift.tt/2oztmIK

via Blogger http://ift.tt/2tcpQZw
March 02, 2018 at 10:16AM
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