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President Trump recently signed an order to speed up the evaluation of psychedelics to treat the brain. That’s coming after decades of strict prohibition on psychedelic drug use dating back to President Nixon. So how did we go from that to a psychedelic renaissance? A look into a key institution in the world of psychedelic research may give us some clues. This episode, NPR’s brain correspondent Jon Hamilton shares insight from a recent trip. (No pun intended.) Want more psychedelic content? Catch our episode on ketamine therapy here, or learn why some scientists want to take the trip out of psychedelics here. Have other questions about psychedelics and the brain? Let us know by emailing shortwave@npr.org!

npr.org · May 6, 2026

Ask any coffee aficionado, and they’ll tell you: A good cup is about more than the beans. The flavor is affected by lots of things – the roast and fermentation of the beans, the coarseness of the grind, the brewing temperature and even the chemicals in the water used to brew it. But there are very few quantitative ways to assess all the flavor variations. Current industry standards measure the concentration of coffee, but they often miss qualities like the acidity, brightness and fruitness. Scientists at the University of Oregon are trying to change that using a tool called a potentiostat that’s often used to measure the charge in batteries.Interested in more food and beverage science? Email us your question at shortwave@npr.org and we may turn it into an episode!Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org/shortwave.

npr.org · May 1, 2026

Saturday’s attack at the White House Correspondents' Association Dinner was the third assassination attempt on President Trump.Host Mary Louise Kelly speaks with NPR National Security Correspondent Greg Myre and NPR Justice Correspondent Ryan Lucas about what the attack says about the state of political violence in the U.S. and the debate over whether the Secret Service was ready to protect Trump and those around him. Email the show at sourcesandmethods@npr.orgNPR+ supporters hear every episode without sponsor messages and unlock access to our complete archive. Sign up at plus.npr.org.

npr.org · Apr 30, 2026