With a Drop of Saliva, Family Histories Are Rewritten Widespread DNA testing has shed light on the ancestry of millions of Americans. But these services have limitations, and the results can be uncertain. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:ROBOT TAKEOVER: AI will hit THESE jobs by 2037 - are YOU at risk?Brian Cox and Neil deGrasse Tyson: Does the LHC prove that GHOSTS exist?Big one coming to EUROPE? Malaga at risk of HUGE earthquake, says shock reportSo, Um, How Do You, Like, Stop Using Filler Words?Trilobites: In an Ancient Burial Place, 3 Centuries of One Woman’s DescendantsEditorial: Twinkle, Twinkle Little Trappist