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?
29:24
Cosmic Questions In Comic Book Form
In “The Dialogues,” a new graphic novel by theoretical physicist Clifford Johnson, the superheroes are scientists—and they’ll teach you a thing or two about physics.
Ethics, STEM, And The Modern Dr. Frankenstein
A lot has changed since the publication of “Frankenstein” but the novel is still a valuable way to explore ethics with kids of all ages.
Hair Science
Explore the hardcore science of hairy things, from muskoxen to ‘Tangled.’
The Scientist And His Monster
Atop icy Mont Blanc, Victor Frankenstein is confronted by his creation.
7:06
Sorry, But Still No Aliens
Plus: News of ancient migrations, strange dimensional physics, and the silliness of ‘raw water.’
4:58
How One Hospital Is Coping With A National IV Bag Shortage
Hurricane Maria knocked out the Puerto Rican factory that produces a large amount of IV bags and fluids. How do hospitals adapt?
8:34
The SciFri Book Club: ‘Frankenstein’
Mary Shelley’s classic science fiction horror story turns 200 this year—and it’s more relevant than ever to how we talk about science.
11:42
A Hair Closer To Lab-Grown (Mouse) Skin
Skin is a complex organ that we still can’t grow completely in the lab. But one group got over a big hurdle: the humble hair follicle.
17:04
Putting AI To Work For The Environment
Lucas Joppa, chief environmental scientist at Microsoft, says that artificial intelligence has the potential to help answer big environmental questions.
15:56
A Temporary Relief For Tinnitus Sufferers
A new way of thinking about hearing loss offers new opportunities for treatment.
25:27
How To Improve Your Cybersecurity
From password management to encrypted messaging to VPNs, tips on how to steer clear of getting hacked.
The Unexpected Pollinator Of The Cocoa Tree
From South Africa to the Arctic, flies play a role in the pollination of flowering plants—including the crop the provides one of our favorite candies.
16:10
SciFri Live: Bourbon Science Quiz
Fermenting, distillation and aging—test your spirit smarts in the SciFri Bourbon quiz.
29:27
A Tour Of The World’s Weird And Wonderful Flies
In her book The Secret Life of Flies, Erica McAlister introduces us the fascinating members of the extended fly family.
46:18
Year In Review: 2017
From colliding neutron stars to the completion of the Cassini mission, a look at 2017’s most important science stories.
34:22
Physics On The Edge
There’s a lot we still don’t know about matter, time, and the contents of the universe. Why that’s a challenge…and a thrill for physicists.
34:13
Much More Than Partridges In Pear Trees
From snowy owls to corn crakes, the Audubon Society’s annual Christmas Bird Count turns its gaze toward all our feathered friends flying overhead during the winter migration.
11:49
When It Comes To Climate Policy, Money Talks
Major investors are beginning to shift their money away from fossil fuels—and towards green energy.
4:48
Urban Life Isn’t A Walk In The Park
Urban air pollution’s health effects may be significant enough to cancel out the health benefits of a brisk walk, according to a recent study.
7:13
Dangerous Cell Phone Guidelines, Interstellar “Goo,” Plus Kids And Birthday Parties
New California guidelines muddy the waters on the science of cell phone radiation