But Why: A Podcast for Curious Kids
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!
Latest episodes
Jun 27, 2025 • 28min
Why do some people like spicy food?
Join chef and author Kenji López-Alt, known for his kids' book Every Night is Pizza Night, as he spices up the conversation about why some people crave fiery foods while others can't handle the heat. Discover how capsaicin works on our bodies and why your tolerance for spice may change over time. Kenji also shares the secrets behind the crunch of pickles and the science of fermentation, all while encouraging kids to explore the joy of cooking and cultural connections through food.
Jun 13, 2025 • 22min
Why do we need to use sunscreen?
Dr. Jeff Yu, a pediatric dermatologist at Massachusetts General Hospital, shares essential insights about sun safety for kids. He explains what causes sunburn and the differences between tanning and skin damage. Listeners learn how sunscreen works and why it's crucial to apply it while engaging in summer fun. Jeff also discusses the importance of protecting eyes from UV rays and shares tips on choosing effective sunscreen types. Hydration is highlighted as vital for outdoor activities, making safe sun exposure enjoyable for everyone.
May 30, 2025 • 34min
Are horseshoe crabs…crabs?
Sara Grady, a Senior Coastal Ecologist at Mass Audubon, joins to unravel the mysteries of horseshoe crabs, fascinating creatures that are more closely related to spiders than crabs. Discover why they mate along Atlantic coastlines and learn about their unique anatomy and behaviors. Grady discusses their ancient lineage, including whether they predate dinosaurs, and the amazing uses of their blue blood. Tune in to find out how humans can interact with these remarkable arthropods and the challenges they face in our changing environment!
11 snips
May 16, 2025 • 21min
Who invented emoji?
Join Paul Galloway, a collection specialist at MoMA and emoji author, as he chats about the colorful journey of emojis from their 1990s origins in Japan to becoming integral in modern messaging. Learn about how these tiny images enhance our communication, the intricacies of emoji coding, and the role of Emojipedia in deciphering their meanings. Plus, discover the creative process behind new emoji designs and whether they should be considered art!
May 9, 2025 • 11min
Why do walruses look so weird?
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
May 2, 2025 • 29min
What’s a seal? What’s a sea lion?
Adam Ratner, Director of Engagement Conservation at the Marine Mammal Center, reveals the intriguing world of seals and sea lions. He discusses how to differentiate between these pinnipeds, their unique sounds, and remarkable adaptations. Listeners learn about the rescue efforts for sick marine mammals and the fascinating lives of these creatures, including their feeding behaviors and conservation challenges. Ratner underscores their role as vital indicators of ocean health, highlighting the importance of conservation for species like the California sea lion.
Apr 18, 2025 • 29min
Do atoms never touch?
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.Check out Dr. Ben Still's YouTube channel to learn more about atomic, nuclear and particle physics.Download our learning guides: PDF | Google Slide | TranscriptFurther reading:Cosmic History - NASAThe Secret Science of AtomsDOE Explains...Nucleosynthesis | Department of Energy
6 snips
Apr 4, 2025 • 24min
How are records made?
Karen Kelleher, the Founder and CEO of Gold Rush Vinyl, shares her insights on the fascinating world of record production. She walks through the journey of transforming colorful PVC pellets into vibrant vinyl records. Kelleher explains why, despite digital music, vinyl remains beloved. The episode dives into the mechanics of record players and the artistry behind sound grooves. Additionally, Kelleher highlights how her company supports emerging artists, turning music dreams into reality while promoting creativity and sustainability.
8 snips
Mar 21, 2025 • 26min
Who invented tacos?
Join Edgar Rico, the talented chef and co-owner of Nixta Taqueria in Austin, as he tackles the delicious world of tacos! Discover the intriguing origins of this versatile dish and how it has evolved over time. Learn why corn is so vital to Mexican culture and the fascinating process of making fresh tortillas. Edgar shares insights on the art of taco making and even dives into the playful debate on whether tacos can be considered sandwiches. A delightful exploration for taco lovers of all ages!
12 snips
Mar 7, 2025 • 33min
What are taxes and tariffs?
Stacey Vanek-Smith, a seasoned business reporter and senior editor at Bloomberg News, simplifies the tricky world of economics for young minds. She unpacks key concepts like taxes, explaining how they fund essential services and distinctions like income and sales tax. Stacey also dives into tariffs, discussing their impact on trade and current U.S. relations with Canada and China. Listeners will learn how inflation affects prices and the surprising psychology behind pricing strategies, all while fostering a deeper understanding of the economy.
