How you behave in Starbucks may reveal something about whether your ancestors grew wheat or rice. That’s the conclusion of a new study in China, which finds that people descended from wheat farmers—who largely rely on themselves—typically drink coffee alone, …
IN THE LAST 20 years, genealogy websites have attracted more than 15 million customers by promising insights into your past. It’s deeply personal, affecting stuff. But when your family tree contains thousands, millions, even tens of millions of people, it’s …
