Podcast

Brains On! Science podcast for kids

Brains On!® is a science podcast for curious kids and adults from American Public Media. Co-hosted each week by kid scientists and reporters from public radio, we ask questions ranging from the science behind sneezing to how to translate the purr of cats, and go wherever the answers take us. @Brains_On

Episodes

  • The how's and why's of hair

    Apr 16 2019

    The hair on our heads is on our minds. We have fun with follicles and learn about how they make hair. Our experts help us decipher what makes hair black or brown, blonde or red, and even why it turns gray. From eye lashes to ear and nose hair, this episode has it all. Why do humans have hair and not fur? Why is there hair on the top of our heads? How does hair grow? How does hair become curly or straight? Plus: A brand new Moment of Um answers the question: "Why does my dad get fuzz in his belly...more

  • Why are smartphones so hard to put down?

    Apr 09 2019

    Screens are everywhere these days! We’re taking a look at why smartphones are so addictive, and how our devices affect us. Our co-hosts took on a bold challenge for this episode: they went a week without phones or tablets. We’ll hear how their experiment went, then Sanden will fill us in on the brain chemical that trains us to love our screens. We'll also learn why the predictability of messages and alerts on smartphones makes them extra hard to put down. Plus, we’ll get a few tips from Catherin...more

  • Mystery Sound Extravaganza 2019

    Apr 02 2019

    This episode is an ear-tickler! Guess your way through eleven mystery sounds — one from a scientist, and ten from listeners like you! Plus, another mystery: what’s making Marc and Sanden dance to the sounds of a door jamb and a printer? Stick around for all these reveals, and the answer to a new Moment of Um: Why is air invisible? This episode of Brains On is sponsored by the Kevin Henkes book, "Sweeping up the Heart,” Panama City Beach (visitpanamacitybeach.com), and Philo (philo.tv/brains). Y...more

  • Carnivores: Plants and animals that bite back

    Mar 26 2019

    Most plants get the energy and nutrients they need from water, sunlight, air and soil. But carnivorous plants get key nutrients from a different source: bugs. We’ll find out how they do it and talk about the mystery of how venus fly traps snap shut. Plus: Two gardeners – one very experienced and one just starting out – offer their tips for growing venus fly traps. So that’s plants, but what about animals? Carnivores are animals that only eat other animals – so how do they get the vitamins, mine...more

  • Flush! Where does our poo and pee go?

    Mar 20 2019

    Every time you flush, your poo and pee start an epic journey. From the toilet, to the sewers, to a treatment plant, our waste travels quite a distance only to end up cleaner by the end. We'll hear from a "PooTube" star about her experience with "the flush." We'll also hear about ancient sewers, a "fatberg" under London and a toilet that cleans waste on site. Plus, our Moment of Um answers why you can feel your heart beating in your neck of all places. Sponsors for this episode include: The ne...more

  • Black Holes, Wormholes and Donut Holes

    Mar 12 2019

    Black holes happen when you have a super huge, mega-giant amount of stuff --- crammed into a super-tiny, infinitely-small amount of space. AND THEY ARE SUPER COOL! In this episode, we learn all about what black holes are and how we found out they were real. We talk to a black hole hunter who has discovered supermassive black holes. And we find out what a wormhole is and why it might really, be really, really hard to ever find one -- or travel through it. Plus: The Moment of Um answers the questi...more

  • Walking on walls: How ants and spiders do it

    Mar 05 2019

    Ants and spiders are able to defy gravity -- but how do they do it? We'll learn about how awesome their feet are and how one predator takes advantage of these powers. Plus: A very challenging mystery sound and a Moment of Um that answers the question, "How do bananas ripen other fruit?" Today’s episode is sponsored by KiwiCo (kiwico.com/brainson), Bona (bona.com/brainson) and Panama City Beach (VisitPanamaCityBeach.com). You can support Brains On at brainson.org/donate.

  • My air came from where?! How oxygen gets around

    Feb 26 2019

    Oxygen is quite the savvy traveler. We explore how this gas travels all around the world and ends up pretty much everywhere for us to breathe. Plus we'll look at how plants and others make the stuff. And we learn how oxygen ended up on Earth in the first place (hint: it involves super space explosions!). We'll make friends with some molecules, hear about a tiny fart that changed the world and guess an all new mystery sound. Oh, and this week's Moment of Um asks: "if a poisonous snake bit itself,...more

  • How do airplanes fly?

    Feb 19 2019

    How do planes stay in the air? And how did humans figure out that it wasn’t enough to just strap wings to our arms and flap them like birds? We’ll find out about the invention of airplanes and our co-hosts will share the frustrations and joys of being inventors themselves. Plus: An aviation-inspired mystery sound and paper airplane tips! Plus a new Moment of Um answers the question: “What’s the most sour thing in the world?” Today’s episode is sponsored by Madison Reed (madison-reed.com and...more

  • Memory and deja vu

    Feb 12 2019

    In this episode, we take a trip down memory lane. We visit a campus full of hippos to learn how memories are stored, and drop in on a badger trainer to see how she recalls “the great badger blunder.” We also explore how many memories can our brains store. Hint: way more than you probably think. You may have heard of deja vu, but did you know there are other vus too? We found a lost game show where these vus are contestants. All this plus a new Mystery Sound and Moment of Um that answers the ques...more

  • Are we still evolving?

    Feb 05 2019

    In this episode, we climb up, down and all around our evolutionary family tree. When did we branch off from our more ape-like ancestors? And will we evolve one day into a different species altogether? We'll meet a bearded scientist from 160 years ago (no, not Charles Darwin) and eat some sundaes (thanks lactase persistence!). Plus a brand new Moment of Um answers the question: Do insects have the same blood as humans? This episode is sponsored by Calm (calm.com/brainson), Quip (getquip.com/brai...more

  • Brains On: Behind the scenes

    Jan 30 2019

    This is a special fundraising episode, where we peek behind the curtain of Brains On!

  • Earthrise: The picture of our planet that changed the world

    Dec 25 2018

    50 years ago NASA astronauts took a picture that changed the world. It was a full color photo of planet Earth as seen from space. This image inspired many to think differently about our home. In this episode we'll tell the tale of that epic snapshot. Plus we'll explain how Earth and our solar system formed in the first place. We'll talk to astrophysicist Lindy Elkins-Tanton about whether there are other planets like Earth in the universe. Plus we have an all new Mystery Sound and a Moment of U...more

  • Soil: Can you dig it?

    Dec 18 2018

    We’re ready to get our hands dirty as we explore the stuff beneath our feet. Clay, sand, mud — soil is everywhere. And it’s alive! We’ll find out how it helps plants grow and learn about all the little organisms that are invaluable in the process (hint: it involves something called the “poop loop”). Plus: A brand new Moment of Um answers the question: “What’s inside of a tooth?” Today’s episode is sponsored by the CBC podcast Tai Asks Why and Quip (getquip.com/brainson). You can support Brain...more

  • Dreams: The science of a sleeping brain

    Dec 11 2018

    You dream every night, even if you don't remember them. But why? We'll hop on a wild ride to go inside the brain and see which parts help create these often fantastical images and storylines. We'll also learn how to take control of our dreams and how they make us more creative. Plus: a new mystery sound and a Moment of Um answers the question "How do octopuses make ink?" This episode is sponsored by Thoughtfully (thoughtfully.com/brains), Pre (eatpre.com offer code BRAINSON), and Little Passpo...more

  • Voices: How do we make sound?

    Dec 04 2018

    We are very vocal about this episode, and that’s because it’s all about voices. We look into how our bodies produce sound and talk to a voice recognition expert. And we find out what’s happening when helium enters the equation. Plus, humans don’t have the voice market cornered -- what about other animals? We’ll drop in on a few creatures and find out how they make sounds too. All that plus a brand new Mystery Sound and berry delicious Moment of Um. Today’s episode is sponsored by Quip (getqu...more

  • Roller coasters: from dream to extreme

    Nov 27 2018

    How do roller coaster designers go from dream to reality? World-renowned roller coaster designer Alan Schilke tells us how he does it. Also — why do some people feel sick or dizzy after riding them? And how do coasters make you feel like you’re floating? Plus: a tricky mystery sound and a Moment of Um that answers the question, “How do boomerangs come back?” This episode is sponsored by Quip (getquip.com/brainson), Thoughtfully (thoughtfully.com/brains) and Little Passports (LittlePassports.c...more

  • Finding your way without a map

    Nov 20 2018

    If your GPS suddenly stopped working, would you still be able to find your way? In this episode we'll teach you tricks and tips to navigate on your own. We'll explain how compasses work and we'll tell you who helped move north to the top of the map. Plus, we'll meet a navigator who goes on long journeys using only traditional Hawaiian navigational techniques and we'll stop by a pitstop for some amazing animal migrators. All that and a Moment of Um on why diamonds are so rare and so valuable. ...more

  • Video Games: A Tale of Two Pongs

    Nov 13 2018

    Introducing our brand new history show, Forever Ago! Join host Joy Dolo and kid co-host Kai on an epic quest through history to figure out how video games began. With help from intrepid reporter Cari Spivack, they’ll visit the age of dinosaur computers, hear the sounds of early arcades and befriend some talking cows. This episode is sponsored by Little Passports (LittlePassports.com/BRAINS), Thoughtfully (thoughtfully.com/BRAINS) and Quip (GetQuip.com/brainson). You can support Brains On and For...more

  • Do dogs know they're dogs?

    Nov 06 2018

    We treat dogs like they're part of the family. But do they know they are a different species, or do they think they're just short, four-legged people? In this episode, canine cognition researcher Alexandra Horowitz helps us puzzle out this question. We’ll also find out what happens (or doesn’t) when a dog looks in the mirror. Dogs are always dozing, and we’ll check in to see if they are dreaming too. And, we take a quick trip around the world in the language of barks. All that, plus a brand n...more

  • Body Bonanza: Yawns, hiccups, goosebumps and more!

    Oct 30 2018

    Brains On listeners have LOTS of questions about the human body so we’ve decided to answer nine – count em NINE – of these questions in one go. The terrific topics tackled: Hiccups, yawns, getting dizzy, goosebumps, fingerprints, limbs falling asleep, brain freeze, chattering teeth and why your voice sounds different when it’s recorded. Plus: Our Moment of Um answers the question: “Why do we have two lungs?” Today’s episode is sponsored by Quip (getquip.com/brainson) and Build-A-Bear Workshop ...more

  • How to find the facts (Prove It: Part 4)

    Oct 23 2018

    Today information is everywhere, but what should you trust? Can you spot the difference between well researched articles and stories full of opinion, errors or even lies? In our final chapter of “Prove It: How to find the facts,” we’ll find out how to think like a fact checker. Plus we’ll share clues on how to spot warning signs of bogus information. We also look into the claim that coffee stunts your growth and for our Moment of Um we explore the world of freckles. Today’s episode is sponsored ...more

  • The scoop on journalism (Prove It: Part 3)

    Oct 16 2018

    Fair and fact-based news helps people make good decisions. That's why journalists work hard to get their facts straight. In the third installment of our series "Prove It: How to find the facts," we'll hear how one daring reporter got herself locked in a mental hospital to uncover injustice. We'll meet an 11-year old publishing her own paper and Washington Post reporter David Fahrenthold tell us how he makes sure his stories are accurate. And we'll find out if the claim that fish have no memory h...more

  • Science under the microscope (Prove It: Part 2)

    Oct 09 2018

    Science is a powerful fact-finding tool -- but how does it work? In this second installment in our series "Prove It: How to find the facts," we look to the past for answers. We find out how a snake heart helped get rid of an old idea about blood and how failed experiments are just as important as successful ones (bye bye, luminiferous ether). And we'll hear from scientists working today about how curiosity is at the heart of science. All this plus a new Mystery Sound and snail-rific Moment of Um...more

  • A Brief History of Facts (Prove It: Part 1)

    Oct 02 2018

    We’d be nothing without facts. They ground us in reality, help us make new discoveries and allowed us to build the modern world. In this episode we explain how we developed two of our most powerful fact finding tools: science and journalism! Plus, we’ll fact-check some conventional wisdom about ladybug spots and explain how surgeons operate on fish in our Moment of Um. All that and a Mystery Sound! Today’s episode is sponsored by Build-A-Bear Workshop (buildabear.com). You can support Brains ...more

  • Brains On! + The Story Pirates: What makes fun things fun?

    Aug 28 2018

    We're teaming up with our pals The Story Pirates to learn about the science of having fun! Our experts tell us what makes something fun and why we're so geared toward seeking a good time. Plus, the Story Pirates share their song "Pizza Revenge." We've also got a fun-tastic Mystery Sound and a Moment Of Um all about pirates. How fun is that? Still want more fun? Head over to the Story Pirates to hear more (plus the punchline to a Brains On joke) - apple.co/2wwlgDE  Today’s episode is sponsored...more

  • What makes gross things gross?

    Aug 21 2018

    Fair warning: Today we’re gonna get gross! We’re talking sounds, smells, and tastes that some people might find repulsive. But we're asking: why? What's the purpose of disgust? Is it something we're born knowing or do we learn to dislike things? When will entomophagy (the eating of insects) catch on everywhere? Plus: A brand new Moment of Um answers the question "Why do worms come out when it rains?"

  • Keeping water healthy, one clue at a time

    Aug 14 2018

    Last week, we heard about the tale of the Cuyahoga River -- a river in Ohio that caught on fire multiple times because it was so polluted. The river is now doing much better, but beyond the fact that it’s not on currently fire -- how do we actually know it’s healthier today? That’s when being a water detective really comes in handy. Plus: Our Moment of Um answers the question: "Why do dogs wag their tails?" Today’s episode is sponsored by Vamousse Lice (vamousselice.com) and Roshambo Baby (rosh...more

  • Burning rivers of fire

    Aug 07 2018

    Rivers are known for being wet. So how did a river in Ohio suddenly catch fire, not once, but several times last century? In part three of our water series, we'll explore the shocking tale of the Cuyahoga River. We'll look at how pollution led to this environmental tragedy and what's been done to address the problem. Plus, our Moment of Um explains why we say "ow!" when we're hurt.

  • How does GPS know where you are?

    Jul 31 2018

    Without GPS, we’d be lost. Literally. Thanks to these radio transmissions from space though, we’re able to pinpoint our location and find our way home. Join us as we learn all about satellites, how the robot voice of GPS is created and how atomic clocks hold it all together. Plus a mystery sound and a brand new Moment of Um answers the question: "What is light made of?" Today's episode is sponsored by Kind Snacks (KindSnacks.com/BRAINS), Vamousse (vamousselice.com) and Roshambo Baby (roshamboba...more

  • Salty snack science: Popcorn, nachos and the origins of salt

    Jul 24 2018

    We're having a snack attack in this episode and we're using it as an excuse to delve into the facts and history of some of our favorite snacks. How does popcorn pop? Who invented nachos? And where does salt come from? Plus, our Moment of Um tells us all about salt's buddy: pepper! If you want to hear more from our pals at Every Little Thing, you can check them out wherever you listen to podcasts or at https://www.gimletmedia.com/every-little-thing And you can find more Ear Snacks on your favorit...more

  • Wanna see Mars' close approach? Just look up!

    Jul 17 2018

    The Red Planet is putting on a show this July. It'll be closer to Earth than it’s been in 15 years and that means at night it'll appear bigger and brighter than average. In fact, you should be able to see it easily without a telescope! In this episode we'll tell you how to spot Mars plus, you'll hear the planet itself answer your questions. Plus a mystery sound and, in our Moment of Um, we'll explain why lava moves slowly even though it's a liquid. Brains On is sponsored today by Build-A-Bear ...more

  • Smash Boom Best: Books vs Movies

    Jul 10 2018

    Today, we’re sharing another epic showdown from our brand new debate show, Smash Boom Best. Each episode, we pit our favorite things against each other, like bats versus owls! Or pizza versus tacos! And we ask you to decide who won.

  • How to cook for an alien

    Jul 03 2018

    The aliens are coming to dinner! In this episode we wonder what food aliens might eat and talk to real scientists who've thought long and hard about this question. Plus, our friends at America's Test Kitchen show us how to whip up a delicious beef and broccoli dish. We'll lay out the cooking instructions step by step throughout the podcast so you can cook along. When the episode is over, you'll be ready to chow down. Find the recipe here: https://www.brainson.org/shows/2018/07/03/alien-cook-alon...more

  • Mix: The science cooking, pt. 4

    Jun 26 2018

    Are you ready to mix it up? In this episode, we find out why oil and vinegar are like bickering siblings in the back seat of a car, what delicious food inspired the invention of the blender, and the most effective whisking technique (spoiler alert: it's probably not what you think). We also learn how the way we mix flour makes our baked goods either chewy or fluffy and we'll learn the best way to make brownies. Plus: our Moment of Um answers the question "Are bananas radioactive?" To make a don...more

  • Chop: The science of cooking, pt. 3

    Jun 19 2018

    Our knives are drawn and ready to mince and dice our way through the science of chopping. In this episode we'll find out what happens to that carrot you're chopping on a molecular level (spoiler alert: the knife never actually touches it!). We also visit a knifemaker's studio and talk to Splendid Table host Francis Lam to get his chopping tips. This is the third in a five part series on the science of cooking, made in collaboration with America's Test Kitchen Kids. For more recipes and informati...more

  • Chill: The science of cooking, pt. 2

    Jun 12 2018

    From ice cubes to ice cream, cold things are a crucial part of cuisine. How do we use chill to our advantage? This is part two of our series on the science of cooking, a collaboration with the brilliant foodies at America's Test Kitchen Kids. This episode is (literally) super cool. We're figuring out how refrigerators work and why some of their parts are hot. We're traveling back in time to find out how selling ice became a very big business (for a while anyway). And we'll learn why ice cream ma...more

  • Heat: The science of cooking pt. 1

    Jun 06 2018

    We’ve teamed up with America’s Test Kitchen Kids to delve into the scrumptious science of cooking. You’ve sent in so many great cooking questions that we had to spread the answers over four episodes. This is our first installment: HEAT. What crazy chemical reactions does heat trigger in food? How do microwave ovens work -- and why can’t you put metal in them when they’re lined with metal? We’ll answer those questions, find out how feeding squirrels helped profoundly change how we prepare food an...more

  • Boogers and sun sneezes: Know your nose

    May 29 2018

    In this encore mash-up episode, we revisit some fascinating facts that will help you get to know your nose. Why does the sun make some people sneeze? And where do boogers come from anyway? Plus: A brand new moment of um answers the question: "Why do sloths move so slow?"

  • The wonderful weirdness of water

    May 22 2018

    One of the weirdest substances in the universe is right under your nose. No, not boogers. Water! Water seems ordinary, almost boring, but take a closer look and you’ll find a wonderfully weird molecule that behaves like nothing else in the universe. It can move up against gravity. It can absorb lots of heat energy without getting super hot. It can dissolve almost anything. It carves canyons and quenches our thirst. Why is water so weird, and why does that matter? Listen to find out! Today’s epi...more

  • Smash Boom Best: Bats vs. Owls (new show alert!)

    May 15 2018

    For the past few months, we’ve been working on a top secret project and we’re so excited we finally get to share it with you! It’s a new show called Smash Boom Best and it’s nothing but debates. Sort of like the ones you’ve heard on Brains On, but with a few new twists. It’s a little faster paced, a little sillier and we hope you’ll think it’s a lot of fun. Today: Wings out, eyes wide -- we’re swooping in on a battle between a perfect pair of creatures of the night. Which is cooler: Bats? Or ow...more

  • What was the first robot? And more from Robotstravaganza

    May 08 2018

    What was the first robot? What is artificial intelligence? How do robots "learn?" In this special episode, we have pieces from our live Robotstravaganza show in Boston. We meet some awesome robots (including one that's very cuddly), debate whether robots are good for humanity or bad, and find out what robots can learn from nature. Plus a mystery sound and a Moment of Um that answers the question, "How do oysters make pearls?"

  • What's in your water?

    May 01 2018

    What’s in your water, and how did it get there? Clean water is a must, but modern living can put a lot of bad stuff in it. Road salt, fertilizer, dog doo-doo, heavy metals - how do these things get in our water? Why should we care? And how can we tell if our water is healthy? In this episode we hitch a ride on the water cycle with a pair of water drops. We learn about what caused the Flint water crisis. And we hear about one young girl’s award-winning idea for a faster way to test lead in water ...more

  • What makes paint stick?

    Apr 24 2018

    Paint goes on wet, then it dries — and it’s stuck there. But how does it stick? We’re going to zoom way in to find out. We’ll visit a forensic chemist, a painter who makes his own paint and a party happening at the molecular level.

  • Allergy Attack: How our bodies can overreact

    Apr 09 2018

    Pollen, peanuts, dust mites. These things aren't poisonous - so why do some people's bodies act like they are? In this episode, we'll find out what happens during an allergic reaction, explore why only some people have allergies and hear about new treatments. Plus: a brand new Moment of Um answers the question "Why do sunsets have so many colors?" and we'll read a new group of listeners to be added to the Brains Honor Roll! Brains On is sponsored today by Acer Swift 5 (visit acer.com, click on "...more

  • Mystery Sound Extravaganza 2018

    Apr 03 2018

    Sounds abound all around. Do you think your ears are up to the task? We have an episode chock full of nothing but mystery sounds to challenge and stretch your listening powers. Also, did you hear that the Brains On store is open? We couldn't be happier with the t-shirts and other goodies we have to offer. Have a look! brainson.org/shop Brains On is sponsored today by ButcherBox. Go to butcherbox.com/brainson and enter "BRAINSON" at checkout squarespace.com enter offer code BRAINSON

  • How do animals breathe underwater?

    Mar 26 2018

    Our lungs are great at getting oxygen out of the air, but if we needed to do that underwater, we'd be sunk. So how do fish, shrimp, jellyfish and other marine animals breathe underwater? And what happens when there is no oxygen in the water for them to breathe? We answer those questions plus a brand new Moment of Um tackles this sticky one: "Why do we have earwax?" And a new group of listeners gets inducted into the Brains Honor Roll! Give a listen! Today Brains On is sponsored by: • Acer Swift...more

  • 'The Rice Cakes and the Oni': A story from Circle Round

    Mar 20 2018

    Sometimes we're in the mood for a good story, so we're turning our show over to Circle Round this week. It's a podcast produced by WBUR in Boston that tells folktales from around the world. These stories are funny, surprising, suspenseful and downright charming. Here's one we think you'll dig. It stars a kid who loves making jokes, so you know it's up our alley. In the meantime, we're hard at work on some exciting new episodes -- including a brand new show. We'll be able to tell you more about i...more

  • Circadian rhythm pt. 2: Beyond human

    Mar 13 2018

    Circadian rhythms keep our bodies on schedule. But what about the rest of the animal and plant world? Turns out, most living things run on similar cycles. In this episode we take a look at why some animals hibernate. There’s also an interview with a plant. Wait, what?!? You read that right: A PLANT!!! All that and a trip back to pre-history, to see how staying up late might have helped mammals survive all those dinosaurs. Three-word hint: nocturnal bottleneck hypothesis.

  • From 8-bit to orchestras: How does video game music affect you?

    Mar 05 2018

    If you’ve ever played a video game, you know how important music can be when it comes to gaming. But what if you choose to play without music? How does that affect your playing? We’re going to dig into the psychology of video game music, explain how the interactivity of video game music works and figure out what “8-bit” means.

  • The tick-tock of our circadian clock

    Feb 27 2018

    The near 24-hour-cycle that keeps us on track is conducted by the suprachiasmatic nucleus. It’s a tiny part of our brains, but it’s super, super important.

  • ‘Is it opposite day?’ and other mind-bending paradoxes

    Feb 20 2018

    Think about it: the answer to the question “Is it opposite day?” will always be no. So how do you figure out if it is, in fact, opposite day?

  • Our 100th episode! What's the big deal?

    Feb 13 2018

    In this milestone of an episode, we ask why people seem to love the number 100 so much. We also learn some amazing tricks involving the number 100 and fan favorite Gungador goes from Most Epic Fighting Battle Realm to a much more challenging setting: high school.

  • Meet Sandy, the left-handed mutant snail

    Feb 06 2018

    For humans, being left-handed or right-handed can definitely affect the way we experience life. Usually, that mismatch is just a minor nuisance — but sometimes, sidedness can change the future of an entire species, as is the case for Sandy.

  • Dolphins vs. Octopuses: Showdown in the sea!

    Jan 30 2018

    Two of our planet’s most amazing animals go head to head in our latest debate.

  • Dogs: What's the secret of their sense of smell?

    Jan 23 2018

    If you’ve ever seen a dog, you know they like to sniff — the ground, people, each other’s butts. They like to smell just about everything. But why? We’re digging into the science of smell and how dogs are able to decode things we can’t even begin to imagine.

  • Mary Shelley and the science of Frankenstein

    Jan 16 2018

    As we celebrate the 200th anniversary of the novel’s publication, we look at how Mary Shelley was inspired by science and how the lessons of the book still resonate with the scientific world today.

  • Super-size-asaurus: How did dinosaurs get so big?

    Jan 09 2018

    Ancient dinosaurs were some of the biggest creatures to ever stomp the Earth. But how and why did they get so giant? Was there more food to help them grow? Was the planet itself somehow different, allowing them to reach epic proportions? In this episode we talk to dino-experts Femke Holwerda and Brian Switek…

  • Mysteries of the universe: Expansion and gravity

    Jan 02 2018

    In this episode we ponder some big questions from Brains On listeners about the vastness of space.

  • The nerve! Electricity in our bodies

    Dec 26 2017

    Your body is making and using electricity all the time — but how do we do it? We’ll take a look at how bioelectricity helps our brain sends signals and our hearts pump blood. And we’ll learn about some amazing animals that use electricity in weird and wild ways.

  • Charged up! The science of batteries

    Dec 19 2017

    Batteries are everywhere — they’re in our phones, our computers, our cars, our toys. But how do they work? To find out, we talk to a scientist who’s making really big batteries to store renewable energy, another who’s working on really small ones to power our phones, and we play in a park with a dog.

  • High voltage! How electric power reaches your outlet

    Dec 12 2017

    We use electricity all the time, but where exactly does it come from? How does it get to our homes? It’s a fascinating journey that can start hundreds of miles from your outlet.

  • Shocking! The science of static (Electricity series pt. 1)

    Dec 05 2017

    What makes your hair stand on end? Why does your skirt stick your tights? Why do you get zapped by electric shocks when you go to touch a doorknob?

  • Where did language come from?

    Nov 27 2017

    Is it possible to know about the origin of language without traveling back in time? And how do babies learn to speak?

  • Smash: When continents collide!

    Nov 21 2017

    How are mountains made? What causes an earthquake? How does hot lava come bubbling up? The answer in each case is…tectonic plates!

  • Curio: Flies on the bus

    Nov 14 2017

    A few weeks ago, we got two emails that were so similar and so intriguing we had no choice but to investigate.

  • What's smaller than an electron?

    Nov 07 2017

    The natural world can be broken down into atoms. And those atoms can be broken down even further. Will the discovery of smaller and smaller particles ever stop?

  • Healing skin and regrowing limbs: The science of regeneration

    Oct 30 2017

    What superpowers does our skin have to repair itself? And what about other animals like salamanders that can do some pretty extreme healing? We’re going under the skin for this one.

  • What is Down syndrome?

    Oct 24 2017

    You may have heard of Down syndrome, but what is it exactly? In this episode, we'll break down the science of chromosomes and how having an extra one leads to this fairly common condition. Plus, we'll learn some tips for making friends with someone who might seem different than you. We'll also swing by a farm staffed by ranchers with Down syndrome. And in our Moment of Um we'll find out why eggs go from clear to white when cooked.

  • Bonus: Kidcast sampler

    Oct 22 2017

    Looking for more awesome podcasts to listen to? We're bringing you a special bonus episode today to let you know about some of the other podcasts that you might want to check out. And if you want to find lots of other podcasts for kids you can always head to applepodcasts.com/kids

  • Curio: Vampire of the Great Lakes

    Oct 17 2017

    The sea lamprey, with its concentric rows of sharp teeth, is part vampire and part alien invader. Would you let it suction to your arm? Reporter Dan Kraker did. Find out if he lived to tell about it.

  • Narwhals: Unicorns of the sea?

    Oct 10 2017

    In this episode, we learn all about narwhals (what that tusk is for and how they’re connected to the myth of the unicorn) and the evolution of teeth (from scale-like nubbins to the versatile chompers we have today).

  • How do volcanoes erupt?

    Oct 02 2017

    There are all kinds of volcanoes all over the world, but how are they formed? And how do they erupt? To find out, we’ll travel to the center of the Earth, and we’ll meet a NASA robot that’s going on a very special volcano mission.

  • For crying out loud: All about tears

    Sep 26 2017

    It’s something so natural that we take it for granted — but when you think about it, it’s a little strange. Why does water come out of our eyes? And why does it happen when we’re happy? Or sad? Or scared? Or exhausted? In this episode we dive into our mysterious emotional tears, find out […]

  • Curio: Quindar tones and talking in space

    Sep 19 2017

    You know those beeps in old NASA recordings? They’re called Quindar tones. This episode explains them and talks to a couple musicians who incorporate archival, NASA recordings into their songs.

  • Mars: Our next home planet?

    Sep 12 2017

    In this episode we learn about Mars’ ancient past, meet an architect hoping to build cities there and we hear from Mars itself, thanks to the planet’s video blog, of course.

  • Thunder, lightning and tornadoes: Where do they come from?

    Sep 04 2017

    There are some basic ingredients to make thunderstorms and tornadoes. We’ll find out what they are – and how to observe these powerful and amazing storms safely.

  • Animal farts: A mighty wind

    Aug 29 2017

    Most animals fart. And some animals put those farts to work.

  • Sunburns: The why behind the ouch (and how to avoid them)

    Aug 15 2017

    To help us understand sunburns, we’re going deep into the skin to look at cells, molecules and electrons.

  • Everything you need to know before the solar eclipse

    Aug 01 2017

    On Monday, August 21, a total solar eclipse will be visible on a path that crosses the U.S., from Oregon on the west coast to South Carolina on the east coast. In this episode, we cover all your eclipse essentials: What causes an eclipse? What happens during an eclipse? How do you safely view it? Spoiler alert: Don’t stare at the sun without special eyewear.

  • Deep Sea vs. Outer Space

    Jul 18 2017

    It’s time for the next Brains On debate! This intense matchup brings us to the depths of darkness, under the water and beyond our earth’s atmosphere. Who will prevail?

  • Fart Smarts: Understanding the gas we pass

    Jul 04 2017

    Is farting good for us? Where do farts come from? Why do only some make sounds? And what’s up with the smell? We tackle your questions about the gas we all pass in this episode.

  • Riding in the car: Motion sickness and optical illusions (Road trip pt. 5)

    Jun 30 2017

    Hosts Molly and Gabriella are locked out. No worries: Sanden and Bob to the rescue. While the duo drives a spare set of keys to our beloved hosts, they pass the time discussing science you might see (or feel) in a car.

  • Traffic: Phantom jams and chicken soup (Road trip pt. 4)

    Jun 23 2017

    On the fourth leg of our road trip, we figure out where traffic comes from and what it would take to make it finally go away.

  • Monster trucks and car design (Road trip pt. 3)

    Jun 20 2017

    At the third stop on our road trip series, we coast in for a pit stop and check out car design. We find out how monster trucks are different than cars, how culture influences car design and what it’s like to make car into animated, talking movie stars.

  • The future of fuel, and the problem with exhaust (Road trip pt. 2)

    Jun 16 2017

    Our planet needs some carbon dioxide, but cars are pumping more into the atmosphere than our carbon cycle can handle. We’ll explore what all this carbon means for our planet. And we talk to a scientist who is working to change how we fuel our cars, so we can cut back on all this carbon dioxide.

  • How do engines work? (Road trip pt. 1)

    Jun 09 2017

    On the first leg of our road trip, we’re exploring the history of engines and how they work, with a little help from Car Talk’s Ray Magliozzi.

  • Mystery sound extravaganza!

    Jun 06 2017

    There are a whopping 10 sounds for you to guess in this episode. Are your ears up to the challenge?

  • Books: How they're made and how your brain reads them

    May 23 2017

    What happens in your brain when you read? What goes into the writing of the words? And what about the making of the books themselves, the physical objects?

  • The science of slime: What is it and why are we so obsessed

    May 09 2017

    Homemade slime is sticky, gooey and all the rage, but what is it? When you combine ingredients like glue and laundry detergent you get a strange, flubbery substance. We’ll explain what’s happening on a molecular level to make this stuff.

  • What was the first life on earth?

    Apr 25 2017

    What was the very first lifeform like? What was the first fish or mammal? Is it even possible to know?

  • How do pianos work?

    Apr 11 2017

    In this episode, we take a field trip to a piano shop, peek behind the walls at a world-famous piano factory and have an EPIC FIGHTING BATTLE to discover how sound travels.

  • How do elevators work?

    Mar 28 2017

    Elevators are like magic. You walk in, the door shuts and when it opens again, you are suddenly someplace new! Ta da! But it’s not magic that does this trick, it’s science and engineering.

  • Why is the ocean salty?

    Mar 14 2017

    If you’ve ever been the ocean, you’ve tasted that salt. But where does it come from? And why aren’t lakes and rivers salty too? A sea shanty is probably the best way to explain, right?

  • Ants: Who's in charge here?

    Feb 28 2017

    We have a lot to learn from ants. This episode digs into the hierarchy of ant colonies (spoiler alert: there is none) and why they walk in a straight line (spoiler alert: they don’t).

  • Do we all see the same colors?

    Feb 14 2017

    What if the color that you call blue and the color I call blue don’t look the same at all? When our brains see color, we’re really just seeing waves of light. Sure, we may be seeing the same waves when we look at the color blue, but do we know if our brains are interpreting those waves in the same way?

  • Cats: Glowing eyes, puffy tails and secret purrs

    Jan 31 2017

    Why do cat eyes look the way they do? Can cats really see in the dark? And what are they trying to tell us with that purr (you know the one)?

  • Dinosaur bones: How do we know their age?

    Jan 17 2017

    Fossil dating is a lot like eating a delicious ice cream cake. Well, sort of. We find out how scientists look at the rock and elements AROUND a fossil to figure out its age. Plus: We talk to a scientist who studied one of the coolest fossils discovered recently: a dinosaur tail trapped in amber, complete with feathers!

  • Lighting the way for sea turtles at Gulf Islands National Seashore

    Dec 30 2016

    We don’t know much about the long life of a sea turtle, since it’s mostly spent in the ocean. When they do come ashore to lay their eggs, we know the babies use the moon and stars to guide them back to sea. But what happens when hotels and houses and streetlights compete for their attention?

  • Surviving the desert at Joshua Tree National Park

    Dec 29 2016

    The desert is hot, dry and deadly. But plenty of plants and animals thrive there. How do they do it? We’ll learn the tricks trees, bats and roadrunners use to make it in Joshua Tree National Park in California.