Your gut’s feelings

Astronomers are putting together a new picture of the early universe. It involves a lot of very weird black holes, and it could help us understand how our own galaxy formed. Guest: Caitlin Casey, astronomer at UC Santa Barbara ⁠ For show transcripts, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠v ...  Show more

It’s surprisingly hard to predict how clouds form, move, and change, but it’s essential to try. Because how clouds react to a warming world helps determine how hot our future will be. Guests: Vox contributor Umair Irfan, scientists Scott M. Collis, Angeline Pendergrass, and autho ...  Show more

Scientists are tuning in to a surprising conversation happening inside us—between our gut and our brain. Host Rachel Feltman chats with Maya Kaelberer, an assistant professor at the University of Arizona’s department of physiology, to explore how intestinal cells and microbiomes ...  Show more

Mitochondria are known as the powerhouse of the cell—but new research suggests they might be far more complex. Columbia University’s Martin Picard joins Scientific American’s Rachel Feltman to explore how these tiny organelles could be communicating and what that might mean for e ...  Show more

This month's episode is an encore presentation of an interview with Dr. Guy Caldwell from the University of Alabama. Dr. Caldwell explains how tools from molecular biology make it possibl ...

What makes an apology sound sincere? Psychologist Shiri Lev-Ari joins host Rachel Feltman to explore how the effort we put into our words—especially through longer, easier-to-understand language—can signal genuine remorse. New research reveals that even subtle linguistic choices ...  Show more