But Why is a show led by kids. They ask the questions and we find the answers. It’s a big interesting world out there. On But Why, we tackle topics large and small, about nature, words, even the end of the world. Know a kid with a question? Record it with a smartphone. Be sure to include your kid's first name, age, and town and send the recording to questions@butwhykids.org!

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Radiolab

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Entiende Tu Mente

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Seguro que a lo largo del día tienes 20 minutos. Elige el momento y nosotros te prometemos ayudarte a entenderTE y entenderLES mejor.| Cuarta temporada, gratis, solo en Spotify. |Entiende Tu Mente es un podcast de psicología que, de una manera amena, te cuenta cómo funciona nuestra mente. Con las voces de Molo Cebrián -podcaster y estudiante de psicología-, Luis Muiño -Psicólogo y uno de los divulgadores de esta temática más conocidos en España-, Mónica González -Coach y profesora universitaria-, Rober Mengual -psicólogo clínico al que escuchas en la sección Apuntes de Psicología- y, lo más importante, con los mensajes de los oyentes del podcast que nos proponen nuevos temas cada semana.

Why are puffins' beaks so colorful?

August 22, 2025 39:34 6.82 MB ( 50.24 MB less) Downloads: 0

Have you ever seen a puffin? With their bright beaks, orange feet and black and white coloring, these birds are very cool to look at. And we’ve gotten a lot of questions about them! In this episode, we talk with Don Lyons, an educator and avian ecologist with the Seabird Institute in Maine. What are puffins? Why are puffin beaks so colorful? Why do puffins dig burrows? How do puffins learn to fly? How can you tell if a puffin is male or female? How long can puffins hold their breath? Why do they have red feet?Download our learning guides: PDF | Google Slide | Transcript

Who invented the English language?

August 08, 2025 34:30 49.98 MB Downloads: 0

Where did the English language come from? Why do words have silent letters? Why do some people have accents? Why do some words sound similar? Answers to all of your questions about English and words with sociolinguist Erica Brozovsky, host of a PBS digital show called Otherwords. Download our learning guides: PDF | Google Slide | Transcript

Chameleons, jellyfish and ballerinas! Check out But Why Bites

July 25, 2025 14:02 20.23 MB Downloads: 0

For today’s episode, we’re doing something a little different! We’re going to be listening to our video series, But Why Bites! (Even without the video part, they’re really cool!) Every other week over on our YouTube channel, we answer one kid question in a short and sweet little video. You can find all of them at the But Why Kids channel while you enjoy this compilation of episodes that we’re calling a Big Bite. 

Who created math problems?

July 11, 2025 29:10 42.27 MB Downloads: 0

Who created math problems? Why does one plus one equal 2 and not 11? Why do numbers go on forever? Why are numbers for counting? Why do you need math?If you love math, this is the episode for you. And if you hate math…this is the episode for you! We’re answering all kinds of questions and demystifying the science and beauty of the discipline of mathematics with Dr. Melania Alvarez, outreach coordinator for the Department of Mathematics at the University of British Columbia in Canada. She’s also education coordinator for the Pacific Institute for the Mathematical Sciences. And she loves all your mathematical questions! Stay tuned for a math puzzle you can solve during the episode!Download our learning guides: PDF | Google Slide | TranscriptMath Question: There's a farmer who sells live chickens. He goes to three markets to sell them. At the first market, he sells half of his chickens, plus half a chicken.Then he goes to the second market, where he sells half of his remaining chickens, plus half a chicken. At the third market, he sells half of all his remaining chickens, plus half a chicken. And he is left with no chickens. How many chickens did he have at the start? (HINT: No chickens were harmed at any of the markets, and they were all fully alive when they were sold.)(Answer: 7 chickens)

Why do some people like spicy food?

June 27, 2025 28:28 41.03 MB Downloads: 0

Ever wondered why some spices burn your throat while others tickle your nose? Or why some of us live for spicy foods while others sweat at the mere thought of a habanero? How do pickles stay crunchy if they’re sitting in brine for weeks on end? And why do we have such different food preferences from our friends? We’re answering your food questions with chef and author Kenji López-Alt, author of the kids book Every Night is Pizza Night and co-host of The Recipe.Download our learning guides:  PDF | Google Slide

Why do we need to use sunscreen?

June 13, 2025 22:15 32.24 MB Downloads: 0

It’s summer and that means slathering yourself with sunblock before you’re allowed to go run around outside. Not everyone loves that ritual: sunscreen can be cold or sticky. Sometimes it gets in your eyes, and it always feels like it’s time to reapply JUST as you’re about to jump in the water or go kick the ball. So, what’s the deal? Is it really all that important? We get the scoop from Dr. Jeff Yu, a pediatric dermatologist at Massachusetts General Hospital. He’ll help us understand: What is a sunburn? What’s a tan? How does sunscreen work? How do you protect your eyes?Download our learning guides: PDF | Google Slide | Transcript

Are horseshoe crabs…crabs?

May 30, 2025 34:11 49.32 MB Downloads: 0

How did horseshoe crabs get their names? Are they even crabs? And did they really exist before the dinosaurs? Early spring presents a unique opportunity to see these living fossils up close as they scuttle up to the shoreline along the Atlantic coast of the United States to mate and spawn. But Why traveled to Cape Cod to see horseshoe crabs up close. There we met up with horseshoe crab expert Sara Grady, who works for Mass Audubon. We learn all about these arthropods and answer questions like: Can humans eat horseshoe crabs? What’s with the pointy tails? Do they pinch? How long do they live? And what’s so special about their blood? Download our learning guides: PDF | Google Slide | Transcript

Who invented emoji?

May 16, 2025 21:14 30.58 MB Downloads: 0

Emoji are those little images you can send in text messages to friends and family. Nine-year-old Leila in New Jersey wants to know how they were invented. So in this episode we find out with Jane Solomon, editor at Emojipedia and Paul Galloway of the Museum of Modern Art in New York. We learn what the first emoji looked like, way back in the dark ages of the 1990s and we explore how emoji may be a new trend, but communicating through pictures is a very old tradition. Plus, are emoji…art? Give this episode a 👂to find out!Download our learning guides: PDF | Google Slide | Transcript

Why do walruses look so weird?

May 09, 2025 10:51 15.69 MB Downloads: 0

Why do walrus look the way they do? Why do they have such long tusks? Do they have other teeth? Do walruses migrate? We learn all about these majestic giants with Adam Ratner of the Marine Mammal Center in Sausalito, California.Download our learning guides: PDF | Google Slide | Transcript 

What’s a seal? What’s a sea lion?

May 02, 2025 28:44 41.52 MB Downloads: 0

What’s the difference between seals and sea lions? Do seals bark? Are they gray? Do harbor seals live in snowy regions? Why do sea lions eat fish? Why do sea lions fight each other? Seals and sea lions are pinnipeds, fin-footed marine mammals, and we’re learning all about them today with a visit to the Marine Mammal Center in Sausalito, California, where marine biologist Adam Ratner answers all your pinniped questions!Download our learning guides: PDF | Google Slide | TranscriptYou can watch the sea lions at San Francisco’s Pier 39 no matter where you live by checking out the live stream at pier39.com/sealions!

Do atoms never touch?

April 18, 2025 28:43 41.46 MB Downloads: 0

What are atoms made of? Why is everything made of atoms? Why are atoms so small? How many atoms are there in the world? How did scientists find atoms if we can’t see them? How do atoms get their color? We learn about atoms with Dr. Ben Still, author of “Particle Physics Brick by Brick” and “The Secret Life of the Periodic Table.” His new book, “How the Universe Works,” will be released in September.Download our learning guides: PDF | Google Slide | TranscriptFurther reading:Cosmic History - NASAThe Secret Science of AtomsDOE Explains...Nucleosynthesis | Department of Energy   

How are records made?

April 04, 2025 23:58 34.6 MB Downloads: 0

How are records made? How does a record player make sound? Why are we still listening to and buying records when there are so many digital ways to listen to music?! But Why visits Gold Rush Vinyl in Austin, Texas to learn how little plastic beads become brightly colored records that can play back your favorite music or sounds.  Download our learning guides: PDF | Google Slide | Transcript

Who invented tacos?

March 21, 2025 25:39 37.06 MB Downloads: 0

Do you love tacos? Then you’re not alone! Tacos originated in Mexico but they’re popular worldwide and they are ever evolving. Kids have a lot of questions about this favorite food so we visited Nixta Taqueria in Austin, Texas to learn more! Who made the first tacos? And where? What’s the deal with crispy shells vs. soft tortillas? Why do tacos have sauce? Why does corn come in so many different colors? And are there rules about what makes a taco…a taco? Download our learning guides: PDF | Google Slide | Transcript

What are taxes and tariffs?

March 07, 2025 31:03 44.86 MB Downloads: 0

No matter how old you are, you’re part of the economy, but it can be tricky to understand what the economy actually is. Plus, what are taxes? What’s inflation? What are tariffs and why have they been in the news so much in 2025? In this episode, we break down economic terms and concepts with business reporter Stacey Vanek Smith.Download our learning guides: PDF | Google Slide | Transcript

Are tapeworms sticky?

February 21, 2025 34:15 49.39 MB Downloads: 0

Fleas, lice, tapeworms and ticks - these are all examples of parasites, living organisms that live on or in a host species and need this other organism to complete their complex life cycles. Sounds bad, but parasites are essential to a healthy ecosystem! And our guest for this episode says they’re also fascinating and even beautiful. Parasite ecologist Chelsea L. Wood, author of Power to the Parasites, tackles all your parasitic questions in this episode! They include: Why are there worms in our stomachs? Why do fleas bite cats and dogs? Where did head lice come from? Why do lice make you itch? Why do ticks suck our blood? Download Transcript