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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Bad Seeds
The biggest black market you’ve never heard of is blooming right under your nose. Whether it’s a 4,000-pound cactus shoveled from the Arizona desert or delicate orchids pinched from the tangled jungle of Peru, rare plants are at the center of a rapidly growing and lucrative world of crime. Hosted by plant expert Summer Rayne Oakes, Bad Seeds plunges straight into it, featuring the buyers, the sellers, the obsessives, and those who came face-to-face with the criminals behind an underworld few know exist.

Making Sense with Sam Harris
Join neuroscientist, philosopher, and five-time New York Times best-selling author Sam Harris as he explores important and controversial questions about the mind, society, current events, moral philosophy, religion, and rationality—with an overarching focus on how a growing understanding of ourselves and the world is changing our sense of how we should live.
Sam is also the creator of the Waking Up app. Combining Sam’s decades of mindfulness practice, profound wisdom from varied philosophical and contemplative traditions, and a commitment to a secular, scientific worldview, Waking Up is a resource for anyone interested in living a more examined, fulfilling life—and a new operating system for the mind.
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An Introduction To VPR's Timeline
In this episode we want to introduce you to another show made at VPR that we think you're really going to like. It's called Timeline and it explores the history of western music. Host James Stewart has just made 4 special episodes exploring the elements fire, water, earth and air. We're bringing you the water episode!
Why Is Milk White?
'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?
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
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
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?
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
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?
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?
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?
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?
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?
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?
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'
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?
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?