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For today’s episode, we’re doing something a little different! We’re going to be listening to our video series, But Why Bites! (Even without the video part, they’re really cool!) Every other week over on our YouTube channel, we answer one kid question in a short and sweet little video. You can find all of them at the But Why Kids channel while you enjoy this compilation of episodes that we’re calling a Big Bite.

Who created math problems? Why does one plus one equal 2 and not 11? Why do numbers go on forever? Why are numbers for counting? Why do you need math?If you love math, this is the episode for you. And if you hate math…this is the episode for you! We’re answering all kinds of questions and demystifying the science and beauty of the discipline of mathematics with Dr. Melania Alvarez, outreach coordinator for the Department of Mathematics at the University of British Columbia in Canada. She’s also education coordinator for the Pacific Institute for the Mathematical Sciences. And she loves all your mathematical questions!

Ever wondered why some spices burn your throat while others tickle your nose? Or why some of us live for spicy foods while others sweat at the mere thought of a habanero? How do pickles stay crunchy if they’re sitting in brine for weeks on end? And why do we have such different food preferences from our friends? We’re answering your food questions with chef and author Kenji López-Alt, author of the kids book Every Night is Pizza Night and co-host of The Recipe.

It’s summer and that means slathering yourself with sunblock before you’re allowed to go run around outside. Not everyone loves that ritual: sunscreen can be cold or sticky. Sometimes it gets in your eyes, and it always feels like it’s time to reapply JUST as you’re about to jump in the water or go kick the ball. So, what’s the deal? Is it really all that important? We get the scoop from Dr. Jeff Yu, a pediatric dermatologist at Massachusetts General Hospital. He’ll help us understand: What is a sunburn? What’s a tan? How does sunscreen work? How do you protect your eyes?

How did horseshoe crabs get their names? Are they even crabs? And did they really exist before the dinosaurs? Early spring presents a unique opportunity to see these living fossils up close as they scuttle up to the shoreline along the Atlantic coast of the United States to mate and spawn. But Why traveled to Cape Cod to see horseshoe crabs up close. There we met up with horseshoe crab expert Sara Grady, who works for Mass Audubon. We learn all about these arthropods and answer questions like: Can humans eat horseshoe crabs? What’s with the pointy tails? Do they pinch? How long do they live? And what’s so special about their blood?