Technology closes in on a roadside device to check pot levels—but the definition of stoned driving remains elusive
Keeping existing federal rules in place is an exercise in hypocrisy
A body of research suggests yes, but scientists are having to fight red tape to study whether medical marijuana could substitute for opioid drugs
We rarely worry about marijuana. So why is it still a Schedule I drug?
A recent federal policy change may boost development of treatments derived from the drug
Experts say listing cannabis among the world’s deadliest drugs ignores decades of scientific and medical data. But attempts to delist it have met with decades of bureaucratic inertia and political distortion...
As U.S. policy lurches along, researchers say easing DEA rules could lead to big advances
New evidence suggests that a chemical derived from marijuana may be an effective treatment for patients with drug-resistant forms of epilepsy
Preliminary studies reveal harmful effects of highly potent cannabis, but causal links remain unclear
The congressional races and state ballot measures that could shape U.S. science