logo
episode-header-image
Jul 2025
35m 40s

12 tiny worlds

Vox
About this episode
If you went back 500 million years and re-ran evolution, would life be totally different today? Guests: Richard Lenski and Zachary Blount, evolutionary biologists at Michigan State University For show transcripts, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠vox.com/unxtranscripts⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ For more, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠vox.com/unexplainable⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ And please email us! ⁠⁠ ... Show More
Up next
Jan 28
What's good sound?
tail spinning
26m 29s
Jan 26
No data, just vibes
There's been a real rollback of one of the US government's most fundamental tasks: gathering data. Vox correspondents Dylan Scott and Umair Irfan take a look at what a future with less data means for climate and health care in the US. Guests: Vox correspondent Umair Irfan and Vox ... Show More
23m 26s
Jan 14
It's not all bad
Things in the news have been feeling kind of…bleak, so we called in some reinforcements. Vox's senior editorial director and resident good news expert Bryan Walsh joins editor Joanna Solotaroff to remind us that there’s still a lot of good stuff happening, too. Guest: Vox senior ... Show More
25m 23s
Recommended Episodes
May 2025
Do Mitochondria Talk to Each Other? A New Look at the Cell’s Powerhouse
Mitochondria are known as the powerhouse of the cell—but new research suggests they might be far more complex. Columbia University’s Martin Picard joins Scientific American’s Rachel Feltman to explore how these tiny organelles could be communicating and what that might mean for e ... Show More
27m 4s
Oct 6
Enceladus’s Alien Ocean, Ancient Fungi and the Flavor of Influenza
Saturn’s moon Enceladus reveals complex organic molecules that could hint at extraterrestrial life. Researchers also uncover fungi’s ancient reign over Earth and warn that second COVID infections may pose greater risks to young people. Plus, ants ferment yogurt, and flu detection ... Show More
9m 47s
Sep 2025
The Role Our Microbiome Plays In Our ‘Gut Feelings’
Scientists are tuning in to a surprising conversation happening inside us—between our gut and our brain. Host Rachel Feltman chats with Maya Kaelberer, an assistant professor at the University of Arizona’s department of physiology, to explore how intestinal cells and microbiomes ... Show More
13m 26s
Jan 2023
BS 204 Guy Caldwell: The Role of Molecular Biology in Neuroscience
<p>This month's episode is an encore presentation of an interview with <a href="https://bsc.ua.edu/profiles/guy-a-caldwell/" target= "_blank" rel="noopener">Dr. Guy Caldwell</a> from the University of Alabama. Dr. Caldwell explains how tools from molecular biology make it possibl ... Show More
1h 15m
Aug 2025
Chikungunya Outbreak, Glacial Outbursts and a New Human Ancestor
The chikungunya virus is rapidly spreading in China. Could it make its way to the U.S.? Meanwhile in Alaska a glacial lake outburst flooded the nearby Mendenhall River to record levels. And in Ethiopia fossilized teeth reveal a new species of Australopithecus—one that possibly li ... Show More
10m 50s
Feb 2025
Exploring the Hidden Life in the Air around Us with Carl Zimmer
Scientists now agree that COVID spreads via airborne transmission. But during the early days of the disease, public health officials suggested that it mainly did so via close contact. The subsequent back-and-forth over how COVID spread brought science journalist Carl Zimmer into ... Show More
16m 47s
Jun 2025
Colossal Creatures
How big can animals really get before they collapse under their own weight or run out of snacks? Could a 12-foot comedian survive their first punchline without snapping in half? Listener Andrew sends Hannah and Dara on a deep dive into the science of supersized species.With evolu ... Show More
28m 57s
Oct 22
The Science of a Convincing Sorry
What makes an apology sound sincere? Psychologist Shiri Lev-Ari joins host Rachel Feltman to explore how the effort we put into our words—especially through longer, easier-to-understand language—can signal genuine remorse. New research reveals that even subtle linguistic choices ... Show More
11m 16s
Sep 2025
Kissing Bugs, Koalas and Clues to Life on Mars
A paper published by the Centers for Disease Control and Prevention argues that Chagas disease is now endemic in the U.S. Koalas may finally be spared from a deadly epidemic. Meanwhile NASA’s Perseverance Mars rover has uncovered tantalizing clues about potential ancient microbia ... Show More
9m 37s
Aug 2025
Science’s Greatest 180s
Science doesn’t always get it right the first time—and that’s part of the journey. In this anniversary episode, we explore how ideas about nerve damage, sustainable materials and alien life have done a full 180. Recommended Reading Celebrating 180 Years of Scientific American 180 ... Show More
8m 4s