It's time now for our science news roundup from Short Wave, NPR's science podcast. I'm joined by two people from the show, Rachel Carlson and Emily Kwong. Hey to both of you. EMILY KWONG, BYLINE: Hi.

For decades, LSD has been associated with vivid hallucinations and counterculture movements. But now, researchers at the University of California, Davis, have discovered a way to tweak this powerful ...