The Quanta Podcast

Is string theory the one true “theory of everything?” Some physicists swear it’s a fundamental ingredient of nature. Others wish it would just go away. On this episode of The Quanta Podcast, host Samir Patel speaks with columnist Natalie Wolchover about the mathematical developments that are keeping the theory relevant — much to the chagrin of its rather vocal critics. This topic was covered in a recent column 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. This episode’s audio coda is a clip from a 2024 live show of Alchemical String Theory (AST), a collective of avant-garde string artists from Atlanta’s Improvisational Underground, performing a round at the Red Light Cafe in Atlanta.

For decades, mathematicians have struggled to understand matrices that reflect both order and randomness, like those that model semiconductors. A new method could change that. The story New Physics-Inspired Proof Probes the Borders of Disorder first appeared on Quanta Magazine.

At the center of little holes in cell nuclei is a mystery. Here, clumps of proteins wiggle disordered tails around like seaweed. They drive a molecular machine that moves countless molecules in and out of the nucleus efficiently, with little room for error. On this episode of The Quanta Podcast, host Samir Patel speaks with biology writer Yasemin Saplakoglu about how new high-def microscopy is revealing the intricacies of these nuclear pore complexes like never before. 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.

We tend to think of math as all about logic and rigor. But what “rigor” actually means has been shaken up quite a few times over the past few centuries. The newest attempt to formalize math comes in the form of the computer program Lean. Mathematicians have mixed feelings. On this episode of The Quanta Podcast, host Samir Patel speaks with math editor Jordana Cepelewicz about how mathematicians today are navigating the tricky balancing act between creativity and formalization. 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.

Artificial intelligence software is designing novel experimental protocols that improve upon the work of human physicists, although the humans are still “doing a lot of baby-sitting.” The story AI Comes Up With Bizarre Physics Experiments. But They Work. first appeared on Quanta Magazine.

Humanoid robots can run, crawl, and sort objects in flashy demos. So why can’t they reliably climb stairs or open doors? On this episode of The Quanta Podcast, host Samir Patel speaks with contributing writer John Pavlus on why robots still struggle with the messy physics of the real world. 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. In this video, Atlas walks, runs and crawls using reinforcement learning. This work was done as part of a research partnership between Boston Dynamics and the Robots and AI (RAI) Institute: https://youtu.be/I44_zbEwz_w?si=KuKC34o_PiKs8zJP

To better understand our cosmos, some astronomers and astrophysicists go old school. Preserved beautifully on a hundred years of glass plate photographs are images of our night sky and its ever changing variations. On this episode of The Quanta Podcast, host Samir Patel speaks with writer Liz Kruesi about how these antique plates are updating our modern understanding of the 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 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. Audio coda by Diana Chester. This project by Diana Chester was made possible through a Powerhouse Research Fellowship at the Museum of Arts and Applied Sciences in Sydney, Australia, a collaboration with Dr. Anna Raupach, and with the support of the Sydney Observatory and the New South Wales archives.

Image generators are designed to mimic their training data, so where does their apparent creativity come from? A recent study suggests that it’s an inevitable by-product of their architecture. The story Researchers Uncover Hidden Ingredients Behind AI Creativity first appeared on Quanta Magazine.

We tend to think of neurons as the sole engine of our thoughts, emotions, and everything in between. For decades, a group of large brain cells called astrocytes have been thought of as mere packing peanuts for the brain. But new research suggests otherwise. On this episode of The Quanta Podcast, host Samir Patel speaks with writer Ingrid Wickelgren about these big cells’ big responsibilities, which include controlling brain states like hopelessness, sleep, and hunger. 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. Audio Coda by NASA.

By simulating ecological networks with microbes, researchers revealed properties that may make natural communities susceptible to invasion. The story The Ecosystem Dynamics That Can Make or Break an Invasion first appeared on Quanta Magazine.

In 1874, Georg Cantor published one of the most important papers in math’s 4,000-year history. Some ideas in it were stolen. On this episode of The Quanta Podcast, the first of a two-parter, host Samir Patel speaks with math editor Jordana Cepelewicz about the hard-fought journey to embed the concept of infinity into math’s foundations. The real story is a lot more complicated than the one remembered in math history. These episodes are based on a recent story; stay tuned for the conclusion next week. Explore our new special series, “The Evolving Foundations of Math,” on our website. 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.

Parallel universes, mysterious collapses, divided worlds. These are among the interpretations of quantum theory’s relationship with reality. It’s no wonder that everyone still has questions. But a century after quantum theory emerged, some of its old mysteries may be finally dissolving. On this episode of The Quanta Podcast, host Samir Patel and contributing writer Philip Ball check in on the age-old question: What ???????? 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. Audio coda courtesy of the Institute for Quantum Computing, University of Waterloo.

By mathematically proving how individual molecules create the complex motion of fluids, three mathematicians have illuminated why time can’t flow in reverse. The story Epic Effort to Ground Physics in Math Opens Up the Secrets of Time first appeared on Quanta Magazine.

What guides a bat’s internal compass? It’s not the stars in the sky, or the Earth’s magnetic field. On this episode of The Quanta Podcast, host Samir Patel speaks with staff writer Yasemin Saplakoglu about how new research into animals’ sense of direction could help explain the feeling of getting “turned around,” or even why some of us are so bad at finding our way. 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. Audio Coda from Prat, Y., Taub, M. & Yovel, Y. Everyday bat vocalizations contain information about emitter, addressee, context, and behavior. Sci Rep 6, 39419 (2016). https://doi.org/10.1038/srep39419

In reality, water doesn’t glitch out. It can’t instantly change direction or spurt randomly into the sky. But on a purely mathematical level, such things are possible. On this episode of The Quanta Podcast, host Samir Patel speaks with staff writer Charlie Wood about the equations that describe our rivers, whirlpools, and breezes — and the “unstable blowups” that mathematicians are probing them for. 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.

Every elementary particle falls into one of two categories. Collectivist bosons account for the forces that move us while individualist fermions keep our atoms from collapsing. The story Matter vs. Force: Why There Are Exactly Two Types of Particles first appeared on Quanta Magazine.

In the allegory of Plato’s cave, prisoners see the world only through shadows. Extending this metaphor to AI, AI models are the prisoners and the shadows are streams of data. Are all models converging on a singular representation of reality? On this week’s episode of The Quanta Podcast, host Samir Patel speaks with staff writer Ben Brubaker about how, despite being trained on entirely different data types, different models can somehow develop similar internal representations. 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. Audio coda: The Cave: A Parable Told By Orson Welles, Produced by Counterpoint Films, directed by Sam Weiss, and illustrated by Dick Oden. https://www.acmi.net.au/works/65888–the-cave-a-parable-told-by-orson-welles/

Particle physics hasn’t yet found the new physics needed to resolve its deepest mysteries. It’s hard to know what to think about or look for. But the most devoted particle physicists are thinking and looking all the same. On this episode, host Samir Patel and columnist Natalie Wolchover discuss the first of our new series of curiosity-driven essays, Qualia, where Natalie asks particle physicists whether the field is facing a profound crisis. 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. Audio Coda provided by UCL High Energy Physics.

Reversible programs run backward as easily as they run forward, saving energy in theory. After decades of research, they may soon power AI. The story How Can AI Researchers Save Energy? By Going Backward first appeared on Quanta Magazine.

We already know that what we eat, drink, and inhale can affect which parts of our DNA are expressed, and which aren’t. But recent research poses a shocking idea: A dad’s habits may be encoded in molecules and transmitted to his future kids. On this episode, host Samir Patel and biology editor Hannah Waters dig into the new epigenetic mouse studies exploring whether sperm cells carry more than just genetic information. 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. Audio coda in this episode: Motivation and reward in learning – Produced by the Institute of Human Relations at Yale University, Published by Penn State University, Psychological Cinema Register [1948].