On Today's Podcast
Are Ultramarathoners Just Built Different?
Ultramarathoners can run with what seems like superhuman stamina. But are their bodies much different than the rest of ours?
Listen NowJanuary 2, 2026
A look back at the biggest science stories of 2025, and a few you may have missed. Plus, over the past year, most of your body has replaced itself cell by cell. What can we learn from other animals’ dramatic feats of regeneration? And, ultramarathoners can run with what seems like superhuman stamina. But are their bodies much different than the rest of ours?
To Study Sea Otters, Use A Lifetime Tracker
Scientists know little about how the toxic algae endemic affects sea otters. That’s why veterinarians are trying a novel new surgery.
If You’re Drinking Tap Water, You’re Consuming Plastic Pollutants
If synthetic fibers are in tap water, they’re also likely in foods prepared with water, such as bread, pasta, and baby formula, researchers say.
Slippery Soles: A Lesson In Friction
Even in our best winter boots, we often slip and slide on icy sidewalks. Design a boot that doesn’t slip on ice, in this friction and surface area engineering challenge.
12:07
How Hurricane Irma Could Affect Florida’s Endangered Species
Biologists wait to assess the damage done to a delicate ecosystem.
12:27
Finding Fossils Under The Sea (Of Kansas)
Paleontologists are piecing together the bones of giant fish and ancient reptiles that inhabited North America’s since long-dried inland sea.
17:42
When Dung Is What’s For Dinner
Dung and carrion beetles dine on pretty unsavory items. But this cleanup crew is essential for the world’s nutrient recycling.
17:37
How Do We Study Ancient Americans?
Anthropologists use genetic information and found artifacts to piece together how the first Americans populated the continent.
34:56
A Farewell To Cassini, Our Friend At Saturn
In 13 years, the orbiter showed us lakes on Titan, geysers on Enceladus, and a new understanding of all things Saturn.
Meet The People Of Cassini
From a singing group to specially brewed beer, the Cassini family recounts what it was like working on the nearly 20-year mission.
One Person’s Dung Is Another One’s Treasure
We took a field trip in Kansas to find some dung beetles.
Postcards From Cassini
After nearly 20 years in space, Cassini’s time is almost up. Here’s a look at what the spacecraft has shown us.
Cassini: A History In Interviews
For 20 years, Cassini’s scientists have shared their discoveries with Science Friday listeners. Here are some of the most memorable moments.
Shedding Light On The New Zealand Glow Worm
Biochemists Miriam Sharpe and Kurt Krause hope to discover the molecular basis for the New Zealand glow worm’s bioluminescence.
Do Edible Dormice Hold Secrets To The Fountain Of Youth?
Investigate the relationship between the protective ends of DNA, called telomeres, and lifespan in a long-lived rodent.
12:18
Bad Plumbing? There Goes The Empire
Researchers say lead pipes of ancient Rome tell the story of the city’s rise and fall.
17:19
How Antibiotics Beefed Up The Chicken Industry
In her new book ‘Big Chicken,’ journalist Maryn McKenna uncovers how the overuse of antibiotics created the current chicken industry.
16:22
How The West Will Be Won (For The Black-Footed Ferret)
In the western prairies, the bandit-masked predator faces an invasive plague, limited food, and the work of staying alive.
12:00
When Your Tongue Needs A Tuneup
The tongue weakens as we age, which can result in more frequent choking during eating. But simple exercise seems to be an effective way to keep the tongue muscles toned.
17:05
Jill Tarter Is Still Searching For A Sign Of Life
Astronomer and SETI co-founder Jill Tarter reflects on her career as an alien hunter.
16:19
Peeking Under The Skin Of Aging Aircraft
A lab disassembles aging aircraft piece by piece to look for signs of cracks, corrosion, and metal fatigue.