Unlike with alcohol, there is no universal standard for THC levels while driving. But that doesn't mean it's safe.

The “If You Feel Different, You Drive Different. Drive High, Get a DUI” campaign will run now through Jan. 1. Law enforcement ...

COLUMBUS, Ohio — The Ohio Traffic Safety Office is working to expand a program aimed at educating high school students about how marijuana affects developing brains and the risks of driving under the ...

BOULDER, Colo. — In Colorado, where the United States’ experiment with legal recreational marijuana began a little more than a decade ago, a team of federal scientists has been paying regular cannabis ...

Dr. Carroll is a pediatrician and health policy expert. President Trump ordered marijuana to be rescheduled under federal law ...

Less than two weeks after recreational pot stores opened their doors in Colorado, proponents of legalization appeared to have their first black eye. A 23-year-old named Keith Kilbey, seemingly under ...