What weird thing in space is pulsing every 20...

Daniel and Kelly explain how cells in a fetus or in an adult know what they're supposed to do, and discuss whether opposable thumbs are necessary for the development of tools and technology.See omnystudio.com/listener for privacy information. 

Daniel and Kelly talk to Dr. Steve Brusatte about his new book "The Story of Birds". We discuss if chickens are really dinosaurs, if we know what color dinosaur feathers were, and why birds survived the devastating asteroid collision with Earth while pterosaurs didn't.See omnystu ...  Show more

It’s been an exciting and hectic year in science discovery and innovation. We’ve reported on stories from across many fields of science—from city climate plans and panda conservation to AI energy consumption and the spread of bird flu.

Earlier this month, Ira sat down in ...

This week on Unexplainable or Not, the newest member of our team, Julia Longoria, tries to figure out which of three scientific mysteries about the sea, the land, and the sky has actually been solved. Guest: Admir Masic, associate professor of civil and environmental engineering ...  Show more

What happens when a real-life astronaut turns to fiction? In this episode, Chris Hadfield shares how decades of spaceflight and global diplomacy inspired his latest novel, Final Orbit, a cold war thriller packed with historical intrigue and technical precision. Host Rachel Feltma ...  Show more

A paper published by the Centers for Disease Control and Prevention argues that Chagas disease is now endemic in the U.S. Koalas may finally be spared from a deadly epidemic. Meanwhile NASA’s Perseverance Mars rover has uncovered tantalizing clues about potential ancient microbia ...  Show more