The federal government is reclassifying medical marijuana, categorizing it as a drug with potential medical benefits and less potential for harm. While this doesn’t legalize marijuana nationally, it does open the door for further research into its effects.

As marijuana use increases in the U.S. and more states legalize the drug, veterinary clinics are seeing a big uptick in pets with cannabis toxicity.

As the Justice Department moves to reclassify medical marijuana products as less dangerous, we're answering your burning questions about THC.

Separate research from the National Institutes of Health says marijuana is the most commonly used drug during pregnancy.

Nearly $20.4 million in cannabis was purchased through adult-use retailers in Michigan on April 20, a date celebrated among marijuana users.

Acting Attorney General Todd Blanche said he is immediately moving medical marijuana from Schedule I to Schedule III, which includes drugs like ketamine, Tylenol with codeine and anabolic steroids.

Gun rights and cannabis legalization are usually on opposite ends of the political spectrum, but both movements have brought about seismic shifts in the United States in recent decades. Now those forces are lining up for a rare overlap in a case coming ...

The U.S. Supreme Court is deciding a case that could impact gun owners in Arizona who smoke marijuana.