Personal background check services can be used to search publicly accessible databases to track down long-lost relatives, childhood friends, or reconnect with an old neighbor. Personal background ...

Patrick Dempsey and Ellen Pompeo in Season 1 of Grey's Anatomy. (Craig Sjodin/Disney General Entertainment Content via Getty Images) ...

Actually, researchers are zeroing in on a solution. The result could mean slowing, and one day even reversing, gray hair. Here’s the idea behind all the geeky science—and what to do until it ...