On Today's Podcast
Why Astronomers Are Excited About Comet 3I/ATLAS’ Close Approach
Comet 3I/Atlas is just the third known object to visit us from outside our solar system. So yes... we'll be talking about aliens.
Listen NowDecember 19, 2025
A newly identified amoeba can survive at the temperature of a medium-well steak. Plus, a distant lava planet shows signs of an atmosphere. And, this Christmas Bird Count, we salute the fabulous, underappreciated, common species. Here’s to you, house sparrow.
11:50
World’s Largest Neutrino Telescope Buried in Antarctic Ice
The IceCube telescope detects over 100,000 neutrinos every year.
17:07
Food Fermentation: The Science of Sausage and Cheese
The chemistry behind sausage and cheese.
16:50
Les Paul: Inventor and Innovator
Paul was a lifelong tinkerer, building a railroad rail guitar as a teen and hearing aids in his 90s.
Picture of the Week: Quantum Dot Sphere
This olive-like structure is composed of tiny luminescing spheres that could be used in cellular imaging.
Chasing Time Machines: A Photographer Turns High Energy Physics Into Art
Stanley Greenberg takes pictures of giant structures used to study tiny particles.
9:33
Why Climate Change Ups the Odds of Fires, Floods
Climatologist Jennifer Francis talks about how climate change and severe weather may be linked.
29:07
Can Mass Transit Solve City Sprawl?
L.A. commuters spend 60 hours a year stuck in traffic. But is mass transit a viable alternative?
7:07
These Smartphone Apps Track Every Step of Your Day
“Quantified self” apps count your steps, measure your sleep, and collect a bevy of other details.
27:42
Science Fairs 2.0
A report card on the state of science fairs today, and a look into the future.
13:06
Birding the Fall Migration
Birding tips on how to get the most out of the fall bird migration.
5:31
A Chronicle of a Whale’s Life, Captured in Earwax
Researchers say earwax can provide data about pesticide exposures, hormone levels, and even stress levels of the endangered blue whale.
Small Talk with Scientists: The Ig Nobel Prize Winners Unwind
Here’s what it’s like to party with researchers whose work might first make you laugh, then make you think.
Here’s What a Fire Whirl Looks Like
Firefighter Greg Sanders encountered a flaming, cobra-like swirl while doing reconnaissance work in Virginia.
A New Beginning: Science Friday Partners with PRI
We’re excited to work with PRI to expand their science and technology coverage.
Voyager: The Story JPL Tried to Kill
When trouble with Voyager turned into trouble for me.
5:35
World’s Largest Volcano Discovered on Pacific Seafloor
A 145-million-year-old volcano covers an area the size of New Mexico.
38:12
Chemistry Research Roundup
A look at highlights from this week’s American Chemical Society conference.
2:41
Stephen Hawking Looks Back
Stephen Hawking says that, were he to start from scratch, he wouldn’t focus on physics.
11:49
Are We There Yet? Voyager 1 Finally Answers ‘Yes’
Scientists announced this week that Voyager has finally reached interstellar space.
17:07
U.S. Cities Quench Growing Thirst with Saltwater
Desalination is growing in popularity, but is it sustainable enough to solve our water problems?