Episodes

Scientists report that they’ve narrowed down the timing of the asteroid or comet impact the led to the dinosaurs’ demise. Plus, the science of sleep, and more.

Experts discuss how the internet impacts public perception of science. Plus, a look at how the world is tackling climate change.

Can beaches be rebuilt to face fiercer storms and rising seas? Plus, how man’s best friend came to be, the SciFri book club talks “The Andromeda Strain,” and more.

What are the best ways to fend off the flu? Plus, an interview with “the Galileo of graphics,” a giant quasar, an update on Beijing’s air pollution, and more.