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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Descubre cómo un ladrillo del siglo 16 se adelantó a Ikea y cómo el VHS fue el precursor de Netflix. Viaja miles de años en el tiempo excavando unos pocos metros de tierra, aprende lo que los humanos no se atreven a decir removiendo entre su basura. Escrito y dirigido por Marcus H, el arqueólogo Alfredo González Ruibal nos acompaña en este viaje a lo más profundo de la condición humana.

Why Is Milk White?

June 22, 2018 23:56 22.98 MB Downloads: 0

'But Why' heads to the farm to answer a whole herd of animal questions: How do cows make milk? Why do cows moo? Why do some animals eat grass? Why do pigs have curly tails? Why do pigs have more teats than cows? Why do eggs in the fridge not hatch? How do chicks grow in their eggs? Why do roosters crow? Why do horses have hooves? Why do horses stand up when they sleep? Why are some fences electric?

Why Do Ants Bite?

June 08, 2018 27:06 26.03 MB Downloads: 0

Why do ants bite? Do both male and female ants have stingers? Do ants sleep? What do they do in the winter? In this episode we learn all about the fascinating world of ants with Brian Fisher , curator of entomology at the California Academy of Sciences. Fisher has identified about 1000 different species of ants!

Hoots And Screeches And Whistles, Part 2

May 25, 2018 23:47 22.84 MB Downloads: 0

How fast can the fastest bird go (and what bird is it?) Why do birds have wings? How do they fly? Why are birds so colorful? And why do they sing at dawn and dusk? In the second part of our live show in April with Bird Diva Bridget Butler, we learn all about birds, and get some lessons in how to sing like our avian neighbors!

Hoots And Screeches And Whistles, Part 1

May 11, 2018 26:59 25.9 MB Downloads: 0

How do owls eat? Why are owls nocturnal and how do they see in the dark? How do owls swivel their heads all the way around? Why do birds move their heads back and forth when they walk? This episode was recorded live at The Mega Awesome Super Huge Wicked Fun Podcast Playdate in Brookline, Massachusetts.

Why Is Tape Sticky?

April 27, 2018 20:56 20.1 MB Downloads: 0

Why is tape sticky? How do erasers erase? We'll tackle arts and crafts in this episode, answering not just those two questions but learning how to make paint out of rocks and spit!! Vermont artist and wildcrafter Nick Neddo joins us with some tips on how to create your own paint and art supplies.

Podcast Extra: Heterotaxy and Hearts

April 20, 2018 07:07 6.84 MB Downloads: 0

After hearing our episode about hearts, 3yo Ethan Chandra, from Middlesex, NJ, wanted to share the story of his own heart. In this podcast extra, Ethan and his 5yo sister Zoe and their mother, Ali, talk about what it's been like for Ethan to live with a condition called heterotaxy.

How Does Your Heart Work?

April 13, 2018 16:29 15.82 MB Downloads: 0

How does your heart keep you alive? How does it pump blood? Why is blood so important? Why do children have heart surgeries? Why is a baby's heartbeat faster before it's born? Why does blood rush to your head when you're upside down? Why can you feel your heart in your head when you're lying still or under water? In this episode of But Why, we're going talking about a very special muscle! It keeps us alive and it has its own special rhythm: the heart. Pediatric oncologist Dr. Jane Crosson from Johns Hopkins Hospital answers questions about the heart.

Why Do We Laugh?

March 30, 2018 25:44 24.7 MB Downloads: 0

Why do we laugh? Why do you feel ticklish when someone tickles you? Why can't you tickle yourself? We learn about how humor develops with Gina Mireault of the Infant Laughter Project at Northern Vermont University.

Why Do People Dream?

March 16, 2018 25:52 24.83 MB Downloads: 0

Why do people dream? Why do people have nightmares? How do dreams happen? Can people who are blind can see in their dreams? In this episode of But Why, we're answering dreamy questions with psychiatrist Dr. David Khan of Harvard Medical School. Download our learning guides: PDF | Google Slide | Transcript

Why Do We Need To Sleep?

March 02, 2018 26:37 25.56 MB Downloads: 0

Why do people need to sleep? How do we actually go to sleep? How does sleeping get rid of toxins in the brain? And how come when it's nighttime I don't want to go to sleep but when it's morning I don't want to wake up?! Those questions and more, all about sleep. We're joined by pediatric sleep psychologist Dr. Lisa Meltzer. Download our learning guides: PDF | Google Slide | Transcript

What Are Olympic Medals Made Of? Why Does Every Country Have A Flag?

February 16, 2018 19:07 18.36 MB Downloads: 0

What are Olympic medals made of? Why does every country have a flag? The 2018 Winter Olympics are underway in PyeongChang, South Korea. We reached out to medal-winning Olympians Elana Meyers Taylor, Andrew Weibrecht and Hannah Kearney to reflect on what winning a medal represents. And we learn about flags with vexillologist Scot Guenter from San Jose State University.

How Do Fish See? How Do Fish Sleep? How Do Fish Breathe?

February 02, 2018 22:07 21.23 MB Downloads: 0

How did the first fish get into the ocean? How do fish breathe under water? If you put a fish's head underwater, but not its tail, would it survive? How do fish get diseases? How do fish see underwater without googles? Why do fish swim when they are asleep? Do fish drink water? Do fish have ears? How are fish born? But Why visits the New England Aquarium in Boston to get answers to those and other questions kids have sent us about fish.

Circle Round: 'The Lion's Whisker'

January 19, 2018 14:32 13.96 MB Downloads: 0

Instead of an episode of But Why, we're going to check out an episode of one of our other favorite podcasts. Circle Round is a storytelling show from WBUR, a public radio station in Boston. On Circle Round, they find stories from all around the world and then get really interesting people to act them out. This week we're sharing one of their episodes with you! This is one of our favorites. And it's actually about sharing. It's called 'The Lion's Whisker.'

Are There Underground Cities?

January 05, 2018 14:25 13.85 MB Downloads: 0

In this episode, we answer a question from 5-year-old Wyatt in Los Angeles and learn about ancient underground cities in Turkey, the subterranean passageways of Montreal and the dug-out houses of Coober Pedy, Australia. Also in this episode: Why is it so warm underground?

Why Do Snowboards Look Like Skateboards?

December 22, 2017 20:45 19.92 MB Downloads: 0

We're marking the winter solstice with an episode all about snow! Why do snowboards look like skateboards? We get an answer from Burton Snowboards. How is snow made? Why is snow white? Why are all snowflakes different? We'll hear from Jon Nelson, author of "The Story of Snow: The Science of Winter's Wonder." Also why does snow melt? And where is the deepest snow?