Quanta Science Podcast - podcast cover

Quanta Science Podcast

Quanta Magazinewww.quantamagazine.org
Susan Valot narrates in-depth news episodes based on Quanta Magazine's articles about mathematics, physics, biology and computer science.

Episodes

An Old Conjecture Falls, Making Spheres a Lot More Complicated

The telescope conjecture gave mathematicians a handle on ways to map one sphere to another. Now that it has been disproved, the universe of shapes has exploded. Read more at QuantaMagazine.org. Music is “Slow Burn” by Kevin MacLeod.

Jan 24, 202417 min

Even Synthetic Life Forms With a Tiny Genome Can Evolve

By watching “minimal” cells regain the fitness they lost, researchers are testing whether a genome can be too simple to evolve. Read more at QuantaMagazine.org. Music is “Hidden Agenda” by Kevin MacLeod.

Jan 10, 202415 min

Selfish, Virus-Like DNA Can Carry Genes Between Species

Genetic elements called Mavericks that have some viral features could be responsible for the large-scale smuggling of DNA between species. Read more at QuantaMagazine.org. Music is “Clover” by Vibe Mountain.

Dec 20, 202313 min

Exoplanets Could Help Us Learn How Planets Make Magnetism

New observations of a faraway rocky world that might have its own magnetic field could help astronomers understand the seemingly haphazard magnetic fields in our own solar system. Read more at QuantaMagazine.org. Music is “Light Gazing” by Andrew Langdon.

Dec 06, 202313 min

To Move Fast, Quantum Maze Solvers Must Forget the Past

Quantum algorithms can find their way out of mazes exponentially faster than classical ones, at the cost of forgetting the paths they took. A new result suggests that the trade-off may be inevitable. Read more at QuantaMagazine.org. Music is “Confusing Disco” by Birocratic.

Nov 21, 202316 min

Underground Cells Make 'Dark Oxygen' Without Light

In some deep subterranean aquifers, cells have a chemical trick for making oxygen that could sustain whole underground ecosystems. Read more at QuantaMagazine.org. Music is “Pulse” by Geographer.

Nov 08, 202314 min

How the Brain Protects Itself From Blood-Borne Threats

To buffer the brain against menaces in the blood, a dynamic, multi-tiered system of protection is built into the brain’s blood vessels. Read more at QuantaMagazine.org. Music is “Good Times” by Patrick Patrikios.

Oct 25, 202312 min

JWST Spots Giant Black Holes All Over the Early Universe

Giant black holes were supposed to be bit players in the early cosmic story. But recent James Webb Space Telescope observations are finding an unexpected abundance of the beasts. Read more at QuantaMagazine.org. Music is “Light Gazing” by Andrew Langdon.

Oct 11, 202325 min

Is It Real or Imagined? How Your Brain Tells the Difference.

New experiments show that the brain distinguishes between perceived and imagined mental images by checking whether they cross a “reality threshold.” Read more at QuantaMagazine.org. Music is “Who’s Using Who” by The Mini Vandals.

Sep 27, 202318 min

Chatbots Don't Know What Stuff Isn't

Today’s language models are more sophisticated than ever, but they still struggle with the concept of negation. That’s unlikely to change anytime soon. Read more at QuantaMagazine.org. Music is “Hidden Agenda” by Kevin MacLeod.

Sep 13, 202317 min

Global Microbiome Study Gives New View of Shared Health Risks

The most comprehensive survey of how we share our microbiomes suggests a new way of thinking about the risks of developing some diseases that aren’t usually considered contagious. Read more at QuantaMagazine.org. Music is “Transmission” by John Deley and the 41 Players.

Aug 30, 202321 min

How Loneliness Reshapes the Brain

Feelings of loneliness prompt changes in the brain that further isolate people from social contact. Read more at QuantaMagazine.org. Music is “Slow Burn” by Kevin MacLeod.

Aug 02, 202321 min

Gene Expression in Neurons Solves a Brain Evolution Puzzle

The neocortex of our brain is the seat of our intellect. New data suggests that mammals created it with new types of cells that they developed only after their evolutionary split from reptiles. Read more at QuantaMagazine.org. Music is “Pulse” by Geographer.

Jul 19, 202320 min

Machines Learn Better if We Teach Them the Basics

A wave of research improves reinforcement learning algorithms by pre-training them as if they were human. Read more at QuantaMagazine.org. Music is “Quasi Motion” by Kevin MacLeod.

Jul 05, 202321 min

The Cause of Depression Is Probably Not What You Think

Depression has often been blamed on low levels of serotonin in the brain. That answer is insufficient, but alternatives are coming into view and changing our understanding of the disease. Read more at QuantaMagazine.org. Music is “Redwood Trail” by Audionautix.

Jun 21, 202322 min

Ants Live 10 Times Longer by Altering Their Insulin Responses

Queen ants live far longer than genetically identical workers. Researchers are learning what their longevity secrets could mean for aging in other species. Read more at QuantaMagazine.org. Music is “Good Times” by Patrick Patrikios.

Jun 07, 202318 min

How the Brain Distinguishes Memories From Perceptions

The neural representations of a perceived image and the memory of it are almost the same. New work shows how and why they are different. Read more at QuantaMagazine.org. Music is “Light Gazing” by Andrew Langdon.

May 24, 202314 min

What Causes Alzheimer's? Scientists Are Rethinking the Answer. (Pt 2)

If plaques of amyloid protein in the brain aren’t the root cause of Alzheimer’s disease, what is? Researchers investigating alternative possibilities have faced resistance from the biomedical establishment for decades, but intriguing theories about the role of defects in protein processing and the immune system have emerged. (Part 2 of two episodes.)

May 10, 202341 min

New Chip Expands the Possibilities for AI

An energy-efficient chip called NeuRRAM fixes an old design flaw to run large-scale AI algorithms on smaller devices, reaching the same accuracy as wasteful digital computers. Read more at QuantaMagazine.org. Music is “Cast of Pods” by Doug Maxwell.

Mar 29, 202319 min

How Supergenes Fuel Evolution Despite Harmful Mutations

Supergenes that lock inherited traits together are widespread in nature. Recent work shows that their blend of genetic benefits and risks for species can be complex. Read more at QuantaMagazine.org . Music is “Chee Zee Jungle – Primal Drive” by Kevin MacLeod.

Mar 15, 202319 min

Brightest-Ever Space Explosion Reveals Possible Hints of Dark Matter

A recent gamma-ray burst known as the BOAT — “brightest of all time” — appears to have produced a high-energy particle that shouldn’t exist. For some, dark matter provides the explanation. Read more at QuantaMagazine.org. Music is “Pulse” by Geographer.

Mar 01, 202312 min

High-Temperature Superconductivity Understood at Last

A new atomic-scale experiment all but settles the origin of the strong form of superconductivity seen in cuprate crystals, confirming a 35-year-old theory. Read more at QuantaMagazine.org. Music is “Quasi Motion” by Kevin MacLeod.

Feb 01, 202315 min

Record-Breaking Robot Highlights How Animals Excel at Jumping

Robots can surpass the limitations on how high and far animals can jump, but their success only underscores nature’s ingenuity in making the most of what’s available. Read more at QuantaMagazine.org . Music is “Pixel Peeker Polka” by Kevin MacLeod.

Jan 18, 202320 min

Old Problem About Mathematical Curves Falls to Young Couple

Eric Larson and Isabel Vogt have solved the interpolation problem — a centuries-old question about some of the most basic objects in geometry. Some credit goes to the chalkboard in their living room. Read more at QuantaMagazine.org. Music is “Good Times” by Patrick Patrikios.

Dec 21, 202221 min

How the Physics of Nothing Underlies Everything

The key to understanding the origin and fate of the universe may be a more complete understanding of the vacuum. Read more at QuantaMagazine.org . Music is “Pulse” by Geographer.

Dec 07, 202217 min