PBS NewsHour

2018 farm bill

Even if your CBD is pure, some federal agencies and state laws still forbid it — even in places where medical or recreational cannabis is legal. The PBS NewsHour visited the nation's only college course for growing weed -- at the University of Connecticut -- to explore the science and legality behind growing hemp to make CBD. Photo by AAron Ontiveroz/The Denver Post via Getty Images

Science Jul 12

Is CBD legal? Here’s what you need to know, according to science

By Nsikan Akpan, Jamie Leventhal

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