With the legalization of marijuana becoming more common, there is a dearth of knowledge on the drug itself, after years of governmental restrictions on its study. This article, by issue editor Tim Baker and other articles about Marijuana in America, are included in the new NewsweekSpecial Edition, Weed U.S.A.
Federal restrictions limiting legal cannabis to one source are slowing research.
Read More: Private Companies Have No Incentive to Study Marijuana
