There’s Still So Much We Need to Learn About Weed—and Fast

On Friday, US senator Ron Wyden (D-Oregon) introduced legislation to legalize marijuana at the federal level—a bill called SR 420, of course. Thirty-three states and the District of Columbia have so far expanded access to weed in some form. But with federal law lagging behind, the states have landed in a tangle of rules that are at times contradictory, self-defeating, and lacking in scientific support.

For the many people affected by the marijuana industry, some of the most pressing questions center on what the industry itself should look like as it morphs from small, underground farms to sprawling industrial outfits. The federal government has historically made it extremely difficult for researchers to explore cannabis, particularly its health effects. And universities haven’t exactly been clamoring to fund studies into how and where cannabis is grown.

But late last month, UC Berkeley opened the Cannabis Research Center to start tackling

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