Efforts to stop weed-impaired driving are ignoring the traffic risk posed by a stoned dad or grandpa, a new study says. About 1 out of 5 (20%) people 50 and older who use weed reported they'd driven ...

Add Yahoo as a preferred source to see more of our stories on Google. If your Uber or Lyft smells like marijuana, police and companies say to get out and report it. But from the back seat, it’s not ...