But Why: A Podcast for Curious Kids

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How do wind turbines work? Aug 23, 2024

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How do wind turbines work? How are wind turbines made? What will our energy picture look like in the future? We’re taking a deep dive into wind power, and trying to make the technology understandable, with Josh Castonguay of Vermont utility Green Mountain Power.

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Do earthworms have eyes? Aug 09, 2024

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Come along to learn all about the wriggling worms that live in the dirt beneath your feet. Earthworms are everywhere, and there are many species of worms yet to be discovered. How do worms communicate? Why do worms have slime? Why do worms come out when it rains? Answers to all of your worm questions with earthworm detective Sam James. Plus, we learn about worm composting with a kid who’s in charge of her family’s food scraps!

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How do we learn to swim? Aug 02, 2024

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But it’s important to know how to swim if you’re going to be around water! In this episode, Upper Valley Aquatic Center Swim School Director Kana Wyman gives us swimming tips, like how to get comfortable putting our heads in the water, how to float and more.

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A few tips for getting started:

If you don’t live near a pool or body of water, you can learn some primary skills even in a bathtub or using a bucket.
Get used to putting your face in the water by using a bucket or big bowl. Keep your mouth closed and blow air through your nose. Humming can help make sure you’re breathing out.
When floating, think about a string pulling your belly button up to the sky. It’s easier to float if you spread your body out, rather than curling into a ball. You may need to swirl your arms or legs to keep your whole body on top of the water.
Some people have a harder time floating than others, due to body mass differences. So if it feels hard, it’s not your fault!
Check with community swimming pools to see if they offer free lessons. Many pools, gyms or swim schools will offer lessons for kids and adults that are free or subsidized, at least occasionally, to make sure everyone has the opportunity to learn lifesaving swimming skills.

What’s it like to compete in the Olympics? Jul 26, 2024

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We’re celebrating the Olympics and Olympic athletes with an episode chock full of the interviews we’ve done with Olympians. Plus we answer some of the Olympic-themed questions you’ve sent us, starting with: what’s all the hype about winning a big piece of metal? And are those medals really made out of gold, silver and bronze? And we speak with Paralympian Emelia Perry, who’s competing in the paratriathlon in Paris! (Other athletes we hear from: skier Andrew Weibrecht, bobsledder Elana Meyers Taylor, and mountain biker Lea Davison.)

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Why do we wear clothes? Jul 12, 2024

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Have you ever been threading one leg through a pair of pants in the morning and wondered…why do we wear clothes anyway? Or wondered why pockets in clothing designed for girls are sometimes smaller than the pockets in clothing designed for boys? In this episode we tackle questions about clothes with fashion historian and writer Amber Butchart.

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Who invented pizza? Jun 28, 2024

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How is pizza dough made? How does gluten-free dough rise? Who invented pizza? Is there pizza in every country? Is yeast alive?! Kids love pizza and they have questions! We get answers from Frank Pinello of Best Pizza in Williamsburg and Scott Wiener of Scott’s Pizza Tours.

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Why do oranges have peels? Jun 14, 2024

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Why do oranges have peels? Why is the inside of an orange segmented? Why are lemons and limes so sour? Why do lemons have seeds but limes don’t? Why does fruit have juice? How many oranges are in a gallon of juice? How do seedless oranges reproduce? How are oranges available year-round? Why are the fruit and the color both called orange? We’re answering questions about citrus with Fernando Alferez from the University of Florida’s Southwest Florida Research and Education Center.

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Do people eat bugs? Jun 07, 2024

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Yes! In many parts of the world, insects are a regular part of people’s diets. Bugs are an efficient source of protein, and many cultures find them delicious. Some countries, like the US, don’t have a strong culture of insect cuisine, but that’s starting to change as people look for ways to feed a growing global population without using as many resources as we currently do. So insects might be an important part of our future diets as well. With all the talk about cicadas this summer, eating bugs has been making news for adults. So, in this bonus episode, But Why learns about cooking up insects with Joseph Yoon, edible insect ambassador at Brooklyn Bugs.

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Why do cicadas come out every 17 years? May 31, 2024

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This spring, trillions of periodical cicadas are emerging from the ground, where they’ve spent 13 or 17 years feeding on xylem (basically, tree juice). The two specific broods emerging this year have not come out at the same time since 1803, and kids may be hearing a lot of news about these loud insects. So today we’re tackling the cicada questions you’ve sent us: Why do cicadas come out every 17 years? What do cicadas eat? Why are there more cicadas at night than in the morning? Why do cicadas molt? How do cicadas get babies? We speak with Dan Gruner, professor of entomology at the University of Maryland, to get answers.

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Where does the sky end? May 17, 2024

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Where is the border between sky and space? That's what 5-year-old Matthias of Durham, New Hampshire wants to know. Alesandra, 3 of Bella Vista, Arkansas wants to know why we can't hold air. In this episode from 2020, we’re joined by anthropologist Hugh Raffles, a professor at The New School, and by astronomer John O'Meara, chief scientist at the Keck Observatory. And we have special scoring by cellist Zoë Keating.

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