But Why: A Podcast for Curious Kids

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 highlighting an episode from 2018 with pediatric sleep psychologist Dr. Lisa Meltzer. And stay tuned; our next episode is all about dreams!

Curious kids are hearing about the impeachment trial of US President Donald Trump. So But Why is helping them understand what impeachment is and what happens when a president is impeached. We'll explain why impeachment is an important part of the US constitution and why impeaching a president doesn't mean removing him or her from office. Our guests for this episode are Loyola Law School professor and legal analyst Jessica Levinson and Kenneth C. Davis, author of Don't Know Much About History and other books.

Do animals get married? Do they fall in love and have friends? Do they laugh when they're happy and cry when they're sad? When you talk to your pets, can they understand you? Why can't they speak to us? And do animals know what kind of animal they are? Alyssa Arre of the Comparative Cognition Lab at Yale tackles these interesting questions.

Why do lions roar? Why do crickets chirp? Why do bucks shed their antlers every year? How can porcupines and hedgehogs avoid poking themselves? Do fish pee? What is the fastest fish? What do jellyfish eat? A roundup of animal questions, with answers from Paola Bouley of Gorongosa National Park in Mozambique, Kent McFarland of the Vermont Center for Ecostudies, naturalist Mary Holland and Jo Blasi of the New England Aquarium.

Why do we like to eat certain foods? Why do some people like to eat spicy food? And what's up with kids not liking vegetables? Why does pineapple hurt your mouth when you eat too much of it? Why do we taste things and how? Why do different foods taste different? Do animals have the same taste buds as people? In this episode of But Why we get answers to all of those questions from chef, author, and TV personality Chris Kimball, Dr. Leslie Stein of the Monell Chemical Senses Center, and Vermont-based chef and cookbook author Matthew Jennings.

In this episode, we tackle why some words are "bad". Plus: Why do people say bad words? Why aren't kids allowed to say cuss words? Why is the middle finger bad? And adults, don't worry, we won't actually be using any bad words in this episode! But we will explore the psychology and brain science behind bad words with Benjamin Bergen, professor of cognitive science at University of California, San Diego. He's the author of What the F: What Swearing Reveals About Our Language, Our Brains, and Ourselves.

How does water turn into ice? Why is ice sometimes slippery and other times sticky? Why is it so cold? Why does it float? How are icicles made? Why are icebergs mostly underwater? What was the ice age? We'll get answers to all of those questions with help from Celeste Labedz of the California Institute of Technology. And we'll take a trip to the world's largest skating rink, the Rideau Canal in Ottawa, Ontario.

How do weather people predict the weather and know what's going to happen tomorrow? Why is a meteorologist called a meteorologist? We learn about weather forecasting with National Weather Service Meteorologist Jessica Neiles and NBC5 Chief Meteorologist Tom Messner.

Are unicorns real? Who made them up? Where do they come from? What do they eat, how big are they, and do they have rainbow manes? We're answering all of your questions about unicorns-and learning about other mythical creatures as well with Adam Gidwitz, creator of The Unicorn Rescue Society and Dana Simpson cartoonist and author of Phoebe and Her Unicorn.

In this episode we're answering a few short questions about animals! Are jellyfish made of jelly? Do fish stink in the water or on land? Where do fish sleep? Do chickens have tongues? Can spiders sleep or not? How many types of animals are there in the world? Do snakes live in Antarctica? Is a springbok faster than a grizzly bear? Do skunks have big tails or small tails?