The flurry of frizzy-hair e-mails began in 2016. Human geneticist Regina Betz of University Hospital Bonn in Germany and her team had just linked three genes to a rare disorder with eye-catching ...
Engraved into the side of a nearly 4,000-year-old ivory comb is a simple wish: Get these lice out of my hair. This faint inscription, written in the early language of the ancient Canaanites, ...
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