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 NowDecember 26, 2025
Physicist Sean Carroll takes on black holes, Schrödinger’s cat, and other big physics concepts. Plus, we revisit some of our top stories of 2025, covering research into how death metal singers safely produce extreme vocalizations, how algorithms and social media are changing language, and what we can learn from people thriving in the coldest parts of the world.
The Single Worst Day In The Entire History Of Life On Earth
The day the infamous asteroid struck Earth might have been worst than you could imagine. Riley Black writes about that fateful day.
28:27
How Grief Rewires The Brain
A neuroscientist explores the science behind heartache.
17:12
Fish Make More Noise Than You Think
Far from being silent, many fishes either have been observed to make sounds, or have the capability to do so.
29:33
The Seafaring Life Of ‘Modern-Day Captain Nemo,’ Robert Ballard
Undersea archaeologist Robert Ballard shares adventures from beneath the waves and his love for deep sea exploration.
17:11
Meet The Drag Artists Who Are Making Science More Accessible
Drag performers, like Pattie Gonia and Kyne, are using social media to bring science communication to a wider audience.
11:25
What’s Up With The Spike In Hepatitis Among Young Kids?
Plus, more info about the holdup in COVID-19 vaccines for children under five.
6:00
COVID-19 Vaccines Are Some Divorced Parents’ Newest Divide
Judges are seeing skyrocketing numbers of separated parents arguing over whether to vaccinate their children.
26:46
Why Sharing Viruses Is Good… For Science
COVID-19 spurred global scientific collaboration, but sharing virus specimens remains complicated. Plus, the role of global politics in monitoring disease.
12:15
Your Dog’s Breed Doesn’t Always Determine How They’ll Behave
Though some types of dogs come with a reputation, new genetic analysis finds that breed is a poor predictor of behavior.
17:25
Life At The Poles Is Changing. What Do These Frozen Regions Forecast?
The Arctic and Antarctic are the two fastest-warming regions on Earth. Here’s how climate change is altering our poles.
8:56
Can Hydrogen-Fuel Cells Drive The Car Market?
Hydrogen fuel cells have some advantages over battery-powered electrics, but infrastructure challenges remain.
8:28
Is It Possible To Decarbonize Shipping?
Global shipping giant Maersk has ordered a dozen cargo ships that run on methanol. Can it make a difference?
Eight Evenings Of Talks, Tentacles, And Talent At Cephalopod Movie Nights
This June, Cephalopod Week is back, with another eight days to cephalo-brate our favorite many-armed friends!
Love Letters To The Earth
We asked you what you love and appreciate about our home. Here are photos, reflections, poems, and songs you sent back.
12:08
Celebrating Earth Day With Sustainable Action
While climate change is a global challenge, there are still many things you can personally do to make a small difference.
17:14
Can The Latest IPCC Report Pave The Way To Better Climate Policy?
We examine how effective the IPCC Report can be at generating climate policy. Plus, a look at promising climate solutions in development.
11:18
Can Carbon Removal Actually Make A Difference In Reducing Emissions?
A new carbon removal industry is booming, but how much should we rely on it—and invest in it—to reach our climate goals?
5:35
Composing A Sound Map Of An Ever-Changing River
Composer Annea Lockwood has been using stereo microphones and underwater hydrophones to create detailed “river maps” since the 1960s.
12:21
Building The World’s Largest Animal Crossing Outside of LA
An engineering feat will soon reconnect habitats cut off from each other by Highway 101 for 75 years.
7:30
Life Has Found A Way On The Great Pacific Garbage Patch
Researchers have found marine life colonizing the giant, swirling patch of trash in the Pacific Ocean.