The Quanta Podcast

If you are well rested and full, your brain tells you that a bruised overripe apple is a piece of subpar fruit to be passed over. However, if you are exhausted and hungry, an overripe apple is categorized as much-needed food. But how is the brain able to categorize that same apple in these situations? On this episode of The Quanta Podcast, co-host Hannah Waters speaks with contributing writer Conor Feehly about how the brain manages to categorize similar sets of sensory signals in radically different ways. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, hear the people behind the award-winning publication navigate through some of the most important and mind-expanding questions in science and math.

The newly described microbe represents a world of parasitic, intercellular biodiversity only beginning to be revealed by genome sequencing. The article A Cell So Minimal That It Challenges Definitions of Life first appeared on Quanta Magazine.

Combinatorial discrepancy theory is a branch of mathematics concerned with balance. If you’re making two teams — sports, trivia, you name it — how can you make sure that they’re perfectly balanced and fair, skill-wise? You start with vectors. On this episode of The Quanta Podcast, host Samir Patel speaks with award-winning science journalist and regular contributor Max Levy on an “absurd,” “holy grail” conjecture, and the major breakthrough made in fall 2025 by two theoretical computer scientists. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel and Senior Editor Hannah Waters speak with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math.

The Navier-Stokes equations are enormously successful at predicting how fluids flow and swirl. But they fail to account for the microscopic bits that make up matter. But now math based on symmetries offers a new conception of fluids and why they behave the way that they do. On this episode of The Quanta Podcast, host Samir Patel speaks with writer Charlie Wood on the longstanding effort to rebuild the theory of fluids from the bottom up, including a strange connection to black holes and models that simultaneously run time forward and backward. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel and Senior Editor Hannah Waters speak with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math.

Mathematicians have broken through a long-standing barrier in the study of “minimizing surfaces,” which play an important role in both math and physics. The article New Proofs Probe Soap-Film Singularities first appeared on Quanta Magazine.

Reasoning comes in many technically defined forms, but the basic procedure is easily recognizable: arriving at a sound conclusion by linking together intermediate steps that logically follow from each other. But when it comes to artificial intelligence, it appears AI can either solve famous mathematical research problems in one shot — or experience a “complete accuracy collapse” under the simplest conditions. So which is it: Can AI reason reliably or not? On this episode of The Quanta Podcast, host Samir Patel speaks with writer John Pavlus on the intellectual whiplash surrounding artificial intelligence’s ability to reason. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel and Senior Editor Hannah Waters speak with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math.

Why are only 10% of people left-handed? Geneticists, developmental biologists, neuroscientists, and evolutionary biologists have all sought explanations, resulting in an astronomical amount of research into the mystery of handedness. No one has put all the pieces together yet, but over the last few years, some major new clues have emerged. On this episode of The Quanta Podcast, host Hannah Waters speaks with writer Natalie Wolchover and traces these new clues to uncover the mystery of human handedness. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel and Senior Editor Hannah Waters speak with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math.

Has the secret to understanding gravity been hiding in plain sight for nearly 50 years? The article Old ‘Ghost’ Theory of Quantum Gravity Makes a Comeback first appeared on Quanta Magazine.

Generally, dark energy and dark matter are regarded as separate entities, but recent astronomical observations have spurred scientists to look further into a less widespread idea — that the two are in fact physically intertwined. On this episode of The Quanta Podcast, host Samir Patel speaks with Physics Editor Kathryn Jepsen about the theories surrounding dark energy’s ties to dark matter and the possibility of a shared dark universe. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel and Senior Editor Hannah Waters speak with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math.

There’s no scientific consensus about what makes living things so different from inorganic material. Some scientists cite replication or metabolism. Others have another answer: Living organisms are different because they do stuff — for reasons. On this episode of The Quanta Podcast, host Samir Patel speaks with writer Philip Ball on the hotly contested idea of “biological agency” and what it means to be alive. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel and Senior Editor Hannah Waters speak with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math.

You’re carrying around in your head a model of how the world works. Will AI systems need to do the same? The article ‘World Models,’ an Old Idea in AI, Mount a Comeback first appeared on Quanta Magazine.

In 1992, mathematicians Dave Bayer and Persi Diaconis proved that seven riffle shuffles are enough to shuffle a deck of cards — but only if you can cut your deck with precision. Decades later, a new proof has finally extended the finding to less precise cuts. On this episode of The Quanta Podcast, host Samir Patel speaks with math editor Jordana Cepelewicz about how a mathematical cutoff phenomenon still exists for riffle shuffling — randomness seems to happen all at once. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel and Senior Editor Hannah Waters speak with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math. In "The Best (and Worst) Ways to Shuffle Cards" from the YouTube channel Numberphile, Persi Diaconis demonstrates different kinds of shuffles, why you might want to stick with a classic riffle shuffle instead of what is called the overhand method and explains his seven shuffles result: https://youtu.be/AxJubaijQbI?si=WctYYRtCZVupMldO

Volcano forecasting can save countless lives. But most of the time warnings are more like educated guesses. How close are we to forecasting volcano behavior the way we forecast the weather? On this episode of The Quanta Podcast, host Hannah Waters speaks with writer and volcano expert Robin George Andrews about just how close we are to accurately forecasting volcanic eruptions. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel and Senior Editor Hannah Waters speak with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math.

Scientists have identified tubulin structures in primitive Asgard archea that may have been the precursor of our own cellular skeletons. The article Tiny Tubes Reveal Clues to the Evolution of Complex Life first appeared on Quanta Magazine.

In the 60s, an eccentric behavioral psychologist pureed a bunch of planarian worms and fed them to other ones. For years after, he claimed that the cannibal worms learned the ground-up worms’ memories. Could he have been… right? On this episode of The Quanta Podcast, host Samir Patel and columnist Claire L. Evans discuss the weird history of memory transfer experiments, and their recent resurgence — and some them appear to be working. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel speaks with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math. At the end of the episode is a clip from a 1966 Sound Seminars lecture by Dr. James V. McConnell called Cannibals, Chemicals and Memory, where he describes how his experimental work led to the conclusion that flatworms can learn. Audio coda credit: The Drs. Nicholas and Dorothy Cummings Center for the History of Psychology, The University of Akron, Ohio.

How many pieces are there in the Standard Model of particle physics? 17, 30, 37, 61, 118? Or is the true answer much larger — and not even an integer? It depends on your taste for complexity — and mystery. On this episode of The Quanta Podcast, host Samir Patel and columnist Natalie Wolchover plummet down another rabbit hole, and this one goes down to the very building blocks of our reality. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel speaks with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math.

Amid the chaos of revolutionary France, one man’s mathematical obsession gave way to a calculation that now underpins much of mathematics and physics. The calculation, called the Fourier transform, decomposes any function into its parts. The story What Is the Fourier Transform? first appeared on Quanta Magazine.

The groundbreaking proof assistant Lean acts as a sort of automatic quality control. It’s gaining ground in the math world — in part because it can interact with AI to open new avenues of inquiry. But there are concerns, too. On this episode of The Quanta Podcast, host Samir Patel speaks with author Kevin Harnett about his new book, the first release from Quanta Books, “The Proof in the Code.” It was featured in a recent excerpt for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel speaks with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math.

How do you define a species? The question has been controversial since the days of Darwin. On this episode of The Quanta Podcast, host Samir Patel speaks with writer Marlowe Starling about how recent advances in genomics have both clarified and complicated the picture. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel speaks with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math.

Thunderstorms have captivated humanity for millennia, and yet their inner workings remain deeply mysterious. On this episode of The Quanta Podcast, guest host and Quanta senior editor Hannah Waters speaks with staff writer Charlie Wood about the new technologies that are helping physicists better understand the phenomena. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, hear the people behind the award-winning publication navigate through some of the most important and mind-expanding questions in science and math. At the end of the episode, listen to an excerpt of the fourth movement of Beethoven's Sixth Symphony, which depicts a violent thunderstorm. Piccolo represents lightning and timpani represents thunder. Courtesy of Symphony Orchestra. Deed - Attribution-NonCommercial-ShareAlike 3.0 Unported - Creative Commons