On Today's Podcast
Why are we changing the way we keep time?
Timekeeping scientists around the world voted to stop using leap seconds, but what does this mean for us?
Listen NowOctober 23, 2026
CRISPR pioneer Jennifer Doudna discusses the evolution of gene-editing technology and what it takes to be a good scientist. Timekeepers around the world voted to stop using leap seconds, but what does that mean for us? Plus, how "problem bears" help test engineers evaluate consumer products, author Kazuo Ishiguro on emotional truth in our age of AI, and the science of apple varieties.
8:55
An Important Test for the Amyloid Hypothesis
The results of a Phase III clinical drug trial could reveal whether beta amyloid is at the root of Alzheimer’s disease.
7:55
Six Things You Can Break Down Today
The Science Club discusses their “Break It Down” challenge, and offers some suggestions to get your investigations going.
17:28
Looking Beyond Condoms for Male Contraception
Hormonal male birth control can work. But why isn’t it commercially available?
11:18
Just How Easy Is It to Edit DNA?
The CRISPR-Cas9 gene editing system is a less perfect fix for gene editing than news reports make it out to be.
10:24
No Nose, but a Heck of a Sniffer
Researchers have engineered a spinach plant to sense compounds in the surrounding environment and communicate its findings with humans.
6:24
Wireless Power Chair Puts a New Spin on Dance
How a Florida choreographer’s idea could lead to novel dance movements.
A Chair Fit for Dancing
A “smart” power wheelchair enables dancers to move in new directions.
A Chair Fit for Dancing
Equipped with omnidirectional movement, a rotating seat, and a hands-free control, Merry Lynn Morris’ rolling dance chair enables dancers to explore new movement techniques, and may one day provide greater mobility in everyday life, too.
7:15
AIDS Patient Zero, Snoozing Swifts, and Self-Driving Deliveries
Researchers trace the origins of AIDS in the U.S. beyond the original “Patient Zero.”
4:42
This Glove Fits You With Someone Else’s Fingerprints
Researchers have created a 3D-printed glove with fingerprints, which they say will allow us to standardize tests of biometric systems. But will it hand criminals a new tool?
12:29
The Microscopic World Beneath Our Feet
Microbial ecologist Bo Adu-Oppong takes us on a tour of the microbes and slime molds living in the soil, and gives her recipe for making a microbial layer cake—an experiment you can try at home.
7:27
Attack of the Internet of Things
The Achilles heel of the internet turns out to be all the stuff that’s connected to it.
10:06
What Is Energy? Alan Alda—and a Bunch of Kids—Want to Know
Scientists across the globe compete in a challenge to explain science to kids.
17:28
Ignore Mary Poppins. Find Fun in the Medicine.
Game developer Ian Bogost has a way to make life more fun that doesn’t require an app.
10:52
DNA as a Key to Plant Conservation
How mapping plant chromosomes can guide scarce resources to the most threatened species.
17:38
What Caused the Midcontinent Rift?
The Midcontinent Rift is an ancient rift system that could have split the country into two parts a billion years ago.
6:50
The Science Club Challenges You to ‘Break It Down’
Sometimes taking something apart can reveal insight into how it works.
Illustrated Graphs: Using Art to Enliven Scientific Data
Create an illustrated graph using real scientific data, and write an artist’s statement to explain your thinking. Try it with climate change!
7:47
Pyramid Remodeling and the Neighborhood Behavior of Sperm Whales
Annalee Newitz, the tech culture editor at Ars Technica, joins us to discuss the week’s science news, including how to find a hidden room in an ancient pyramid.
4:15
Turning Down the Greenhouse Gases in Your Air Conditioning
A global agreement will phase out heat-trapping HFCs in air conditioners, refrigerants, and other systems.