On Today's Podcast
A Lab-Grown Salmon Taste Test And More Foodie Innovations
Cell-cultured salmon is showing up on menus. How does it compare to the real thing? Plus, food innovations from cultivated meat to mung beans.
Listen NowOctober 24, 2025
A new documentary puts viewers in the shoes of Neanderthals and early humans, giving an intimate glimpse into humans’ evolutionary history. Plus, cell-cultured salmon is showing up on menus. How does it compare to the real thing? And, how mental health information on social media can be both revelatory and misleading.
Birding for the Holidays
Thousands of citizen scientists are taking part in the annual Audubon Christmas Bird Count.
Stem Cells Treat Lou Gehrig’s Disease, In Mice
Stem cell implants slowed the onset of symptoms—and scientists say human trials aren’t far behind.
Debunking Doomsday and Exploring Maya Science
Two archaeologists weigh in on what the ancient Maya actually said about 2012. Spoiler: not much.
The SciFri Book Club Tours ‘The Planets’
The book club reviews Dava Sobel’s 2005 homage to the solar system.
Shooting Stars: Capturing the Night on Camera
Photographer Colin Legg makes time-lapse movies of celestial scenes.
Future Fibers May Be Spun From Slime
The hagfish or “slime eel” shoots out slime containing silk-like fibers of remarkable strength.
Shooting Stars
Photographer Colin Legg makes time-lapse movies of celestial scenes. Legg shares tips, and describes some of the challenges of landscape astrophotography—from babysitting cameras for days and nights on end to running electronics off the grid.
Alan Alda’s Challenge to Scientists: What Is Time?
Calling all scientists! How do you explain the concept of time to an 11-year-old?
How Science Can Keep Your Christmas Tree Merry and Bright
Rick Bates, of Penn State University, shares handy tips for how to care for your Christmas tree.
Is It Possible to Create a Mind?
What does intelligence really mean? Can we build a machine that thinks as humans do?
A View from the Flip Side
Ten days is all it takes your brain to right a world that looks upside down.
Ask a Quantum Mechanic
Teleporting data, time travel, quantum computers. Sci-fi or science reality? ‘Quantum mechanic’ Seth Lloyd joins us to talk about the mysteries of the quantum world.
‘Instant’ Looks at Polaroid’s Land
Edwin Land, the inventor behind Polaroid, is the subject of a new book by Christopher Bonanos.
Super-Sized Snapshot
Meet a Polaroid camera that weighs 235 pounds and takes 2-foot-tall instant snapshots.
No Joke — Why Even Tragedy Gets a Laugh
A comedian and a neuroscientist walk into a bar… er, nevermind. Tig Notaro and Robert Provine talk about why we laugh at even the grimmest of subjects.
‘Escape Fire’ Exposes Flaws of American Healthcare
The film tells the stories of a soldier addicted to painkillers, and a doctor with no time for her patients.
Blue Whale Barrel Roll Caught on Camera
Biologists are using data tags and a National Geographic Crittercam to study the dining habits of the largest animal on the planet.
Unlocking a Lake’s Bacterial Secrets, Beneath 20 Meters of Ice
Bacteria locked under Antarctic lake ice may shed light on life’s limits, and the possibility of life on other worlds.
Ask an Astronaut: Don Pettit and Jeff Hoffman on Spaceflight
Two astronauts answer your questions and discuss the many curiosities of living in space.
Curiosity 2.0? NASA Announces New Mars Rover Plans
NASA officials weigh in on the flurry of planetary science news from the past week.