July 4, 2025
In this archival show, undersea archaeologist Robert Ballard shares adventures from beneath the waves and his love for deep-sea exploration. Plus, research suggests that we share parts of our microbiome with people in our social networks beyond family members. And, a book uses science and the benefit of hindsight to figure out how to survive some of history’s biggest disasters.
Unfolding Stories In Maps Of The Grand Canyon
View historic maps of the Grand Canyon that tell tales of exploration of the national park.
‘You Press The Button.’ The Rest Is History.
You thought the hand-wringing around cell phone cameras was bad? Learn how controversial even adding a button to cameras was in this excerpt from Rachel Plotnick’s “Power Button.”
Trekking Around The World With Ira
Wish you were here! Ira gives us a little taste of local science as he travels the world.
The Geologists Who Control Lava
The molten material can be a menace of destruction in nature, but a geologist and an artist are investigating how it maneuvers.
7:44
Yes, It’s Cold. But Also, It’s Warmer
While the polar vortex has the Midwest in a deep freeze, Australia is having a heatwave—and globally, the planet’s warmer than average.
4:15
More Desalination, More Problems?
Desalination converts salt water into drinkable water, but there are pros and cons to the process.
6:18
Inside The Lava Lab, Burning Questions
A Syracuse University team studies the viscosity and flow of searing-hot lava…from a parking lot.
11:47
Feel Sleepy When You’re Sick? That Could Be Your Immune System Kicking In
Researchers identified a protein linked to the immune system that may make you feel sleepy when you’re sick.
17:08
How Much Carbon Do Our Forests Capture?
Forests are some of the biggest natural weapons we have to fight rising global temperatures. But how well are they working?
17:02
Peter A. Browne’s Hairy Obsession
Meet the 19th-century citizen scientist who collected hair from elephant chins, mummies, and presidents.
28:01
How Artists Made Code Their Paintbrush
Reflecting on the history and future of coding and technology in art.
How Do Scientists Know What Dinosaurs Looked Like?
Put yourselves in the shoes of a paleontologist and paleoartist as you try to recreate what dinosaurs looked like using the same methods as the experts.
4:13
A Phone Call From A Penguin Colony
Science Friday education director Ariel Zych calls in live from Antarctica.
7:51
Meet The Vampire-Like Beetles That Prey On Ants
One group of ground beetles has evolved to live in ant nests and feed on hapless workers.
3:52
The Complex Problem Of The Invasive Common Reed
Common reeds are invading New England marshlands—but could this “stubborn bully of a plant” help marshes weather climate change?
15:25
The Silent Tremors Of Volcanoes, Caught On Mic
Researchers are using the inaudible vibration of air in volcanic craters to learn more about what’s going on deeper down.
11:51
Saturn Put A Ring On It Only Relatively Recently
Saturn’s rings are estimated to have only formed millions of years ago, which is much younger than the planet itself.
23:26
Doctors Failed To Disclose When Drug Companies Were Paying Them
A ProPublica and New York Times investigation found that dozens of doctors failed to disclose their industry ties in scientific journals.
6:19
The Cold Case That Began A DNA Forensics Revolution
The investigative podcast “Bear Brook” explores the first case to use consumer genetic testing to find a killer.