A new study from NASA has found that astronaut Scott Kelly’s genes are no longer identical to those of his identical twin after spending a year in space. Preliminary results from NASA’s Twins Study found that seven percent of Kelly’s …
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 …
