As legal restrictions loosen, scientists are investigating long held beliefs that cannabis has few side effects and can ...

A Los Angeles Times analysis revealed that legal cannabis contains comparable pesticide contamination rates as illicit weed.

It has been 12 years since Colorado legalized recreational marijuana.And among the issues that have confounded law ...

In legal and illicit markets, weed products turn up with hidden health threats. The similarities are no shock, said industry ...

More than half of cannabis smoking products in California’s legal market contain chemicals for which there is no public ...

Two New York men who used bat poop to fertilize their marijuana plants have died from a rare fungal infection caused by ...