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.

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.

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.

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.

Where is the border between sky and space? What about between sky and land? And why we can't hold air? The answers to these questions are scientific but it turns out they’re also philosophical and a little bit mysterious! In this episode from 2020, we’re joined by anthropologist Hugh Raffles, an author and professor at The New School, and astronomer John O'Meara, chief scientist at the Keck Observatory. And we have special scoring by cellist Zoë Keating.

That’s a question a lot of people have, honestly. But a kid named Rosie was bold enough to ask us to investigate why. So, in the latest episode, we dig in on why cockroaches get such a bad rap and why you might want to reconsider if you’re not a fan.We dig deep into insects with Jessica Ware, an entomologist and curator at the American Museum of Natural History. She’s also the host of the PBS digital series Insectarium. Answers to your questions about cockroaches, termites, dragonflies, praying mantises and more!

Why do lizards have scales? Why are reptiles cold-blooded? Why do lizards have long tongues? How do lizards grow their tails back? Are crocodiles dinosaurs? What’s the difference between an alligator and a crocodile? Why do crocodile eyes look like they have mirrors in the back? How do crocodiles chomp? Why do crocodile teeth stay sharp? Why are crocodiles green? Why do crocodiles swim? Answers to all of your crocodile and alligator questions with Venetia Briggs-Gonzalez, one of the researchers known as the Croc Docs at the University of Florida.

Why do people dance? Where did ballet come from? How do you make pointe shoes for ballet? How does practice make you better at things? But Why visited Dance Theatre of Harlem to get answers to these questions with company artists Derek Brockington and Lindsey Donnell.

A solar eclipse is coming to North America on April 8, 2024. The moon will line up perfectly between the earth and the sun, blocking out the sun’s light and casting a shadow that will pass over parts of Mexico, the United States and Canada. People in the path of totality will experience a few minutes of darkness during the day as the moon perfectly covers the sun. Those not in the path of totality in those countries will still experience a partial solar eclipse. In this episode, we’re answering questions about the eclipse and talking about how to keep your eyes safe if you’re watching it! We speak with Bridgewater State University solar physicist Martina Arndt, Fairbanks Museum planetarium director Mark Breen and Thomas A. Hockey, author of America’s First Eclipse Chasers.

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?