Voters in Washington, D.C., have approved the legal use of marijuana for recreational purposes. Supporters of the D.C. marijuana measure had a 65-29.5 percent lead as of 9:09 p.m. ET, with 20,727 voting in favor.
Colorado's new campaign to deter teen marijuana use tries to make the case that weed is bad for your brain.
One TV ad shows a group of teens lighting up inside a dark car as moody music plays in the background. The commercial cites a Duke University study that found a link between regular marijuana use and a lower IQ.