Today on The Gist, author Zoe Cormier explores the science behind the trinity of human pleasures. She's the author of Sex, Drugs, and Rock 'n' Roll: The Science of Hedonism and the Hedonism of Science. For the Spiel, Mike discusses how we discuss the Baltimore riots. Today's sponsor: Shari's Berries. Treat your mom to something sweet this Mother's Day with a gift from Shari's Berries. Fresh berries dipped in chocolate start at $19.99. Visit berries.com, click on the microphone, and use the code GIST. And by CVS Health, where health is everything. CVS is working to save thousands of lives, one pill at a time. Visit cvshealth.com to learn more. Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at http://www.slate.com/gistplus.

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