The first school in Nevada devoted to teaching people how to operate a successful medical marijuana dispensary has opened.

Disasters from the do-it-yourself drug have been recorded primarily on the West Coast, where states have passed medical marijuana laws, in a phenomenon reminiscent of meth lab mishaps, but not as common.

A federal appeals court Tuesday rejected a petition to reclassify marijuana from its current federal status as a dangerous drug with no accepted medical use.

Washington's newly-passed recreational marijuana law is opening up a whole new world for local farmers.

With reggae music pumping in the background and flashing disco-style lights, members of the recreational pot club lit up in celebration of the new year — and a new place to smoke legally among friends.

Teenagers' perception of the dangers of marijuana has fallen to the lowest level in more than 20 years, a new study says, prompting federal researchers to warn that already high use of the drug could increase as more states move to legalize it.

Welcome to the confusing and often conflicting policy on pot in the U.S., where medical marijuana is legal in many states, but it is increasingly difficult to grow, distribute or sell it. And at the federal level, at least officially, it is still an...

"It's amazing where we've come," says Rick Steves of the legalization measures Washington and Colorado voters approved last month. "It's almost counterculture to oppose us."

A group of lawmakers on Friday urged the Justice Department to respect recent votes in Colorado and Washington state allowing the recreational use of marijuana, and some introduced a bill to ensure that happens.