On Today's Podcast
Your Cells Are Always Building A Whole New You
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?
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?
A Corpse Flower Blooms in Denver
The putrid odor of a large tropical plant has begun wafting through the Denver Botanic Gardens—and visitors are lining up to inhale deeply.
Does Sound Affect the Way We Taste?
Research suggests that sound is the “forgotten sense” when it comes to how we perceive flavors.
11:58
El Niño Vs. the Blob, Yeast Painkillers, and a Butter Bummer
This week’s news roundup takes us to San Francisco, where Ira is joined by KQED science and environment reporter Lauren Sommer.
7:46
The Strangely Social Life of the Larger Pacific Striped Octopus
A new study reveals surprising mating, dwelling, and feeding behaviors in one rare species of octopus.
11:55
Gold King, and Other Abandoned Mines Plague Colorado
The EPA accidentally triggered a blowout at the Gold King mine in Colorado, releasing three million gallons of wastewater into the Animas River.
17:26
How Big Blazes Shape Landscapes
Scientists are closely monitoring how forest vegetation shifts after catastrophic fires, and discovering a few surprises.
17:32
A Candidate’s Voice Might Sway Your Vote
Voters tend to prefer politicians with deeper voices—a sign of strength and competence, says political scientist Casey Klofstad.
16:53
App Chat: Assistive Technology
For people living with disabilities, smartphones present both unique challenges and benefits.
SciFri Book Club Meetup
Meet the author of “The Soul of a New Machine” at Google’s New York City headquarters.
Quiz: Is This Panda Pregnant?
Take our Panda Pregnancy Test to see how much you know about panda reproduction.
A Drone’s-Eye View Of An Algae Bloom
This picture, shot by a drone, reveals the verdant fingers of a blue-green algae bloom.
The Origin Of The Word ‘Thermometer’
The term first appeared in an early “puzzle book” full of scientific brainteasers.
12:11
Venomous Frogs, a Polar Bear World Record, and Printing Pills
A polar bear dives longer than ever before, and researchers in Brazil discover two venomous frogs.
9:10
The SciFri Book Club Reads ‘The Soul of a New Machine’
This August, the SciFri Book Club reads Tracy Kidder’s Pulitzer Prize-winning account of the creation of a new computer.
11:43
Rats on the Job
The average rat sleeps all day and eats garbage all night…but some of them have jobs to get to.
17:20
Keeping Cool (Without Making Global Warming Worse)
The global demand for air conditioning isn’t sustainable, so what other options do we have?
10:08
Can Babies Take A Joke?
Researchers say toddlers can figure out when their parents are joking.
6:17
Video Pick: The Unlikely Tale of a Tenacious Snail
For over 70 years, no one had seen the oblong rocksnail, until one spring day in 2011.