What's cool about cockroaches?

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!  Stay tuned for a math puzzle you can solve during the episode! Download our learning guides: PDF | Google Slide | Transcript Math Question: There's a farmer who sells live chickens. He goes to three markets to sell them.  At the first market, he sells half of his chickens, plus half a chicken. Then he goes to the second market, where he sells half of his remaining chickens, plus half a chicken.  At the third market, he sells half of all his remaining chickens, plus half a chicken. And he is left with no chickens.  How many chickens did he have at the start?  (HINT: No chickens were harmed at any of the markets, and they were all fully alive when they were sold.) (Answer: 7 chickens)

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. Download our learning guides:  PDF | Google Slide

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? Download our learning guides: PDF | Google Slide | Transcript

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?  Download our learning guides: PDF | Google Slide | Transcript

Emoji are those little images you can send in text messages to friends and family. Nine-year-old Leila in New Jersey wants to know how they were invented. So in this episode we find out with Jane Solomon, editor at Emojipedia and Paul Galloway of the Museum of Modern Art in New York. We learn what the first emoji looked like, way back in the dark ages of the 1990s and we explore how emoji may be a new trend, but communicating through pictures is a very old tradition. Plus, are emoji…art? Give this episode a 👂to find out! Download our learning guides: PDF | Google Slide | Transcript