A new study led by the one of the only people permitted by the U.S. government to grow marijuana for research purposes finds that cannabis available across the country is “basically the same” in terms of its primary cannabinoid content. Genetics, the paper says—not regional growing differences—are chiefly responsible for the chemical makeup of the … Continue reading Federally Approved Research Marijuana Is ‘Very Similar’ To What’s On Commercial Markets, Study Says, But Other Scientists Aren’t So Sure