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But Why

  • Why are there Burmese pythons and chameleons in the Florida Everglades? We might not know how those animals arrived but they are causing damage to the natural ecosystem. An invasive species outcompetes native plants and animals in an ecosystem. So how does this happen? But Why travels to the Everglades to learn more about how and why species end up in places they shouldn’t. Plus, why are we sometimes told to kill invasive insects like the spotted lanternfly?
  • How is snow made and what’s it made out of? Why is it white and sparkly? Why do snowflakes look different? Can snowstorms have thunder? Why do some places, like mountains, get more snow than others? Answers to all of your questions about snow, with Seth Linden, who works for the National Center for Atmospheric Research in Boulder, Colorado. Plus we hear what it’s like to live at the top of Mount Washington, famous for its extreme weather, from Alexandra Branton, a meteorologist who works at the observatory at the top of the mountain, even during the frigid winter.
  • How do glasses work? Why do some people need glasses and other people don’t? Why do we have different eye colors? We answer your questions about glasses and eyes in the second of two episodes with Dr. Sujata Singh, a pediatric ophthalmologist at the University of Vermont Medical Center. And we hear from Maggie, a kid with low vision, about what it’s like to need glasses.
  • What shape are our eyes? What are they made of? How do they work? What’s the point of having two eyes if we only see one image? Why do we blink? What’s the point of tears and why are they salty? We answer your questions about eyes in the first of two episodes with Dr. Sujata Singh, a pediatric ophthalmologist at the University of Vermont Medical Center.
  • We’ve collaborated with our podcast friends at What If World to bring you the first (and only) episode of…But Why If World! In this episode we jointly answer some “what if” questions. What if cereal could talk to us? What if dinosaurs didn’t lay eggs? What if the world started spinning backwards? Take a listen to this curious collaboration.
  • For our last episode of each year, we often like to ask our listeners around the world to send us something fun. This year, we wanted you to tell us what makes you happy and you had a lot to share on that topic! Our listeners find happiness in spending time with friends, family, and pets and in doing activities they love: playing with friends, toys, arts and crafts, participating in sports, watching movies, and riding bikes. Two people say the special sandwiches their adults make them are what bring them happiness. And some kids told us learning new skills is especially exciting for them. In this episode: a happiness bonanza with all the responses we got. Plus we talk with a happiness expert: Gretchen Rubin. She’s the author of the Happiness Project and host of a podcast called Happier with Gretchen Rubin.
  • Almost half the people in the world speak at least two languages. And, it turns out, that includes a lot of But Why listeners! In this episode we talk about what it’s like to speak multiple languages and kids from around the world share phrases in many different languages so we can all learn something new! Plus, linguist and professor Anna Babel answers questions we’ve gotten about languages, including: What does it mean to be bilingual? Why do some people speak two or three languages? How many languages can someone learn?
  • How are electric guitars made? How are guitar strings made? And how, exactly, do guitars work? We’re answering questions about electric guitars with local luthier (guitarmaker) Lea in Burlington, Vermont. Creston gave us a tour of his studio–including his custom glitter room, to help us understand what goes into making an electric guitar.
  • For the past 50 years, visitors to the Smithsonian National Zoo in Washington, D.C. were able to see giant pandas. But recently, China asked for those pandas back. (Technically, all pandas in the United States are considered “on loan” from China.) With pandas in the news, we’re bringing back the episode from our 2022 field trip to the zoo. Zookeeper Mariel Lally answered all of your panda questions. Among the questions we tackled: Why do animals live in the zoo? Why are pandas black and white? Do pandas hibernate? How can we save the pandas? Check out our social media pages for lots of pictures!
  • Why do we celebrate birthdays? Why do we have birthday cakes? Why do we blow out candles on our birthdays? Why are our birthdays on the same date but a different day of the week each year? This episode has answers to all of your birthday questions - plus we hear about unique birthday traditions sent in by our listeners!