The Lost Family: How DNA Testing Is Upending Who We AreA deeply reported look at the rise of home genetic testing and the seismic shock it has had on individual lives You swab your cheek or spit into a vial, then send it away to a lab somewhere. Weeks later, you get a report that might tell you where your ancestors came from or if you carry certain genetic risks. Or the report could reveal a long buried family secret and upend your entire sense of identity. Soon, a lark becomes an obsession, an incessant