The state of Oklahoma became the 30th in the nation to legalize marijuana for medicinal purposes on Tuesday.

Researchers are looking for novel approaches to prevent and treat the disease - and cannabis is among those being considered.

Stricter rules on testing, packaging and labeling of products loom large for the state’s pot industry, possibly weeding out smaller players.

Oklahoma primary voters were weighing Tuesday whether to approve one of the least-restrictive state laws allowing medical marijuana, the nation’s first cannabis ballot question of the year.

“There has been an evolution and sophistication of different containers and packaging as the industry has evolved.”

U.S. military veterans would be allowed to receive recommendations for medical marijuana from government doctors under legislation approved by the Senate on Monday.

U.S. health regulators on Monday approved the first prescription drug made from marijuana, a milestone that could spur more research into a drug that remains illegal under federal law, despite growing legalization for recreational and medical use.

Considering a career in the cannabis business? Now may be the time to take the plunge as licensed marijuana companies ramp up production and rush to fill jobs ahead of pot's legalization in Canada on Oct. 17.

How a legal shift in the state took a farm crop from zero to 60 in two years.