Liberal California became the largest legal U.S. marketplace, conservative Utah and Oklahoma embraced medical marijuana, and the U.S. East Coast got its first commercial pot shops.
By Gillian Flaccus, Associated Press
An analysis of more than five years of Medicare Part D and Medicaid prescription data found that after states legalized weed, the number of opioid prescriptions and the daily dose of opioids went way down.
By Kate Sheridan, STAT
Cannabis breeders have long been crossing plants to develop distinctive strains that purportedly do different things. But many scientists see the whole thing as a pipe dream.
By Angus Chen, Scientific American
As marijuana legalization sweeps the nation, physicians and public health officials are sounding alarms about its potentially harmful effects on young people.
By Christine Vestal, Stateline
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