RadioEd is back, thanks to the magic of Zoom. This week, we’re turning our attention to the issues surrounding recreational marijuana.

In Colorado, marijuana is no longer purchased from dealers but from budtenders, and instead of referring to reefer by any of its shadowy pseudonyms, you can talk openly about what kind you like and whether you prefer edibles, joints or otherwise. Marijuana for personal use has been legal in the state since 2014, and in the intervening years, an entire industry has grown around the substance, which remains illegal at the federal level. Sam Kamin, a pioneer in the field of marijuana law and a member of the task force that implemented legalization in Colorado, talks successes, ongoing challenges and the possibility of federal legalization.