PET imaging has revealed the first evidence in humans of changes in brain chemistry among people who use both substances.

A Milwaukee homicide is prompting a renewed push by a Wisconsin lawmaker to ban all THC products, as toxicology results are pending and hemp industry leaders warn against sweeping restrictions.

Marijuana has been at the center of debate for legalization, but do people really know what weed does? Check out today's new video that takes a deeper look beyond the stoner stereotypes and reveals ...

(CNN) – Police in Maryland are asking for volunteers from the community to smoke marijuana in front of them for research. The department is calling it a Cannabis Green Lab. It will be an educational ...