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The Quanta Podcast

The Quanta Podcast

343 episodes — Page 3 of 7

Never-Repeating Tiles Can Safeguard Quantum Information

Two researchers have proved that Penrose tilings, famous patterns that never repeat, are mathematically equivalent to a kind of quantum error correction. Read more at QuantaMagazine.org. Music is “Quasi Motion” by Kevin MacLeod.

Aug 7, 202417 min

Radio Maps May Reveal the Universe's Biggest Magnetic Fields

A controversial technique has produced detailed maps of the magnetic fields in colossal galaxy clusters. If confirmed, the approach could be used to reveal where cosmic magnetic fields come from.

Jul 25, 202411 min

New Clues for What Will Happen When the Sun Eats the Earth

Recent observations of an aging, alien planetary system are helping to answer the question: What will happen to our planet when the sun dies? Read more at QuantaMagazine.org. Music is “Dark Toys” by SYBS.

Jul 10, 202413 min

New Cell Atlases Reveal Untold Variety in the Brain and Beyond

Recent efforts to map every cell in the human body have researchers floored by unfathomable diversity, with many thousands of subtly different types of cells in the human brain alone. Read more at QuantaMagazine.org. Music is “Confusing Disco” by Birocratic.

Jun 26, 202421 min

Extra-Long Blasts Challenge Our Theories of Cosmic Cataclysms

Astronomers thought they had solved the mystery of gamma-ray bursts. A few recent events suggest otherwise. Read more at QuantaMagazine.org. Music is “Light Gazing” by Andrew Langdon.

Jun 11, 202425 min

Meet Strange Metals: Where Electricity May Flow Without Electrons

For 50 years, physicists have understood current as a flow of charged particles. But a new experiment has found that in at least one strange material, this understanding falls apart. Read more at QuantaMagazine.org. Music is “Thought Bot” by Audionautix.

May 29, 202420 min

In the Gut's 'Second Brain,' Key Agents of Health Emerge

Sitting alongside the neurons in your enteric nervous system are underappreciated glial cells, which play key roles in digestion and disease that scientists are only just starting to understand. Read more at QuantaMagazine.org. Music is “Running Out” by Patrick Patrikios.

May 15, 202417 min

During Pregnancy, a Fake 'Infection' Protects the Fetus

Cells in the placenta have an unusual trick for activating gentle immune defenses and keeping them turned on when no infection is present. It involves crafting and deploying a fake virus. Read more at QuantaMagazine.org. Music is “Unanswered Questions” by Kevin MacLeod.

May 1, 20249 min

Why the Human Brain Perceives Small Numbers Better

The discovery that the brain has different systems for representing small and large numbers provokes new questions about memory, attention and mathematics. Read more at QuantaMagazine.org. Music is “Quasi Motion” by Kevin MacLeod.

Apr 17, 202421 min

Inside Scientists' Life-Saving Prediction of the Iceland Eruption

The Reykjanes Peninsula has entered a new volcanic era. Innovative efforts to map and monitor the subterranean magma are saving lives. Read more at QuantaMagazine.org. Music is “Fire Water” by Saidbysed.

Apr 3, 202422 min

Echoes of Electromagnetism Found in Number Theory

A new magnum opus posits the existence of a hidden mathematical link akin to the connection between electricity and magnetism. Read more at QuantaMagazine.org. Music is “Clover 3” by Vibe Mountain.

Mar 20, 202420 min

Tiny Language Models Come of Age

To better understand how neural networks learn to simulate writing, researchers trained simpler versions on synthetic children’s stories. Read more at QuantaMagazine.org. Music is “Thought Bot” by Audionautix.

Mar 6, 202420 min

Rogue Worlds Throw Planetary Ideas Out of Orbit

Scientists have recently discovered scores of free-floating worlds that defy classification. The new observations have forced them to rethink their theories of star and planet formation. Read more at QuantaMagazine.org. Music is “Light Gazing” by Andrew Langdon.

Feb 21, 202421 min

What Makes Life Tick? Mitochondria May Keep Time for Cells

Every species develops at its own unique tempo, leaving scientists to wonder what governs their timing. A suite of new findings suggests that cells use basic metabolic processes as clocks. Read more at QuantaMagazine.org. Music is “Pulse” by Geographer.

Feb 7, 202424 min

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, 202416 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 6, 202312 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, 202315 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 8, 202313 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

Physicists Use Quantum Mechanics to Pull Energy out of Nothing

The quantum energy teleportation protocol was proposed in 2008 and largely ignored. Now two independent experiments have shown that it works. Read more at QuantaMagazine.org. Music is “Pulse” by Geographer.

Aug 16, 202319 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 2, 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, 202319 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 5, 202320 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, 202321 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 7, 202317 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, 202313 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

What Causes Alzheimer's? Scientists Are Rethinking the Answer. (Pt. 1)

After decades in the shadow of the reigning model for Alzheimer’s disease, alternative explanations are finally getting the attention they deserve. Read more at QuantaMagazine.org. Music is “Redwood Trail” by Audionautix.

Apr 26, 202334 min

Astronomers Say They Have Spotted the Universe's First Stars

Theory has it that “Population III” stars brought light to the cosmos. The James Webb Space Telescope may have just glimpsed them. Read more at QuantaMagazine.org. Music is “Light Gazing” by Andrew Langdon.

Apr 12, 202314 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, 202318 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, 202318 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 1, 202312 min

Inside the Proton, the 'Most Complicated Thing You Could Possibly Imagine'

The positively charged particle at the heart of the atom is an object of unspeakable complexity, one that changes its appearance depending on how it is probed. Read more at QuantaMagazine.org. Music is “Light Gazing” by Andrew Langdon.

Feb 16, 202316 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 1, 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

A Good Memory or a Bad One? One Brain Molecule Decides.

When the brain encodes memories as positive or negative, one molecule determines which way they will go. Read more at QuantaMagazine.org. Music is “Retro” by Wayne Jones.

Jan 4, 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, 202220 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 7, 202216 min

Geometric Analysis Reveals How Birds Mastered Flight

Partnerships between engineers and biologists have begun to reveal how birds evolved their superb maneuverability. Read more at QuantaMagazine.org. Music is “Running Out” by Patrick Patrikios.

Nov 23, 202218 min

How the 'Diamond of the Plant World' Helped Land Plants Evolve

Structural studies of the robust material called sporopollenin reveal how it made plants hardy enough to reproduce on dry land. Read more at QuantaMagazine.org. Music is “Redwood Trail” by Audionautix.

Nov 9, 202217 min

Protein Blobs Linked to Alzheimer's Affect Aging in All Cells

Protein buildups like those seen around neurons in Alzheimer’s, Parkinson’s and other brain diseases occur in all aging cells, a new study suggests. Learning their significance may reveal new strategies for treating age-related diseases. Read more at QuantaMagazine.org. Music is “Aimless Amos” by Rondo Brothers.

Oct 26, 202222 min

The Brain Has a 'Low-Power Mode' That Blunts Our Senses

Neuroscientists uncovered an energy-saving mode in vision-system neurons that works at the cost of being able to see fine-grained details. Read more at QuantaMagazine.org. Music is “Unanswered Questions” by Kevin MacLeod.

Oct 12, 202218 min

Researchers Achieve 'Absurdly Fast' Algorithm for Network Flow

Computer scientists can now solve a decades-old problem in practically the time it takes to write it down. Read more at quantamagazine.org. Music is “Aimless Amos” by Rondo Brothers.

Sep 28, 202218 min

Graduate Student's Side Project Proves Prime Number Conjecture

Jared Duker Lichtman, 26, has proved a longstanding conjecture relating prime numbers to a broad class of “primitive” sets. To his adviser, it came as a “complete shock.” Read more at quantamagazine.org. Music is “Thought Bot” by Audionautix.

Sep 14, 202212 min