On today’s episode of Hear Me Out: blaze it. Ahead of the honorary stoner holiday that is 4/20, we’re taking a look at the marijuana landscape. Public opinion has warmed considerably to legal weed in the past few decades – both medicinal and recreational – even though it remains a Schedule 1 drug on the federal level. But some public health experts are still sounding the alarm, because this has all happened very quickly… and though hard-line illegality was harmful, what we’re doing now might be causing harm, too. Dr. Keith Humphreys, professor of psychiatry and behavioral sciences at Stanford University, joins us. If you have thoughts you want to share, or an idea for a topic we should tackle, you can email the show: hearmeout@slate.com Podcast production by Maura Currie. Want more Hear Me Out? Subscribe to Slate Plus to access ad-free listening across all your favorite Slate podcasts. Subscribe today on Apple Podcasts by clicking “Try Free” at the top of our show page. Or, visit slate.com/hearmeoutplus to get access wherever you listen. Learn more about your ad choices. Visit megaphone.fm/adchoices