May Day began with hardly a ripple of trouble Wednesday under the watchful eyes of police, who were hoping for calm but braced for trouble amid vivid memories of last year's destructive riots and mayhem.

The Colorado Court of Appeals found there is no employment protection for medical marijuana users in the state since the drug remains barred by the federal government.

More parents need to talk with their teens about the dangers of abusing Ritalin, Adderall and other prescription drugs, suggests a new study that finds discouraging trends on kids and drug use.

Boston Marathon bombing suspect Dzhokhar Tsarnaev was charged in his hospital room Monday with using a weapon of mass destruction to kill, and he could get the death penalty.

Oregon lawmakers don't appear to be interested in asking voters to create a sales tax or require labels on genetically modified foods. But plenty of other ideas are still very much alive after a key deadline came and went last week.

Gunfire erupted at a Denver park Saturday, injuring two people and sending tens of thousands gathered for an annual pot celebration fleeing the area, police said.

A crowd of marijuana smokers expected to swell to 80,000 gathered Saturday in Denver to mark the counterculture holiday known as 4/20 on the first celebration since Colorado and Washington made pot legal for recreation use.

An Ohio police chief says he ate cake left in his kitchen without realizing it was laced with cannabis oil.

A North Seattle resident took nonchalance to a whole new level last week when he told police he "wasn't really trippin'" after being threatened at gunpoint by an irate marijuana seller twice in two days, according to the Seattle Police Department.

The Petersons don't smoke pot, but they say their next-door neighbor does when they're not growing it. And the smell is making them ill.

A Seattle man suspects the medical marijuana he smoked made him sick, but the state was unwilling to help him find out.