Cannabis and the teen brain: Key development stages require caution, doctors say

Infographic: On the origins of 4/20, pot potency, drug testing

Study: Cigarettes more pleasurable with alcohol than with pot

Poll: Marijuana safer than opioids, but moms shouldn’t use it, Americans say

Treating heroin addiction with marijuana? History encourages skeptics

Major medical marijuana study hurt by Johns Hopkins withdrawal

Rehab clinic’s bold experiment: Cannabis as an opioid-addiction aid?

New pharmaceutical drug based on cannabis gets OK from Feds

Survey: Legalized marijuana has no effect on teens’ use