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Why do sharks have multiple sets of teeth? Why do sharks lose so many teeth? Do sharks eat fish? How do sharks breathe underwater? Do sharks sleep? Give a listen to this totally jaw-some conversation about sharks with Dr. Kady Lyons, shark researcher at the Georgia Aquarium! We also tackle: Why are dinosaurs extinct and sharks are not? Were megalodons the biggest sharks in the world? Do sharks have noses? How do sharks communicate? Why do sharks bite? Why are sharks dangerous?

How do popcorn kernels pop? How do salmon know where to return to spawn? How do rabbits change colors? Why does television fry your brain? How do zippers zip stuff? Who was the fastest runner in the world? In this episode, we'll tackle all of these questions!

Field trip time! Today we’re learning all about snakes while out on a search for timber rattlesnakes in New York with state wildlife biologist Lisa Pipino. Some of the questions we tackle: How do some snakes make venom? Why are some snakes venomous and others are not? Why do rattlesnakes have a rattle? How do snakes slither on the ground without legs? Why don’t snakes have legs? Why don’t snakes have ears? How do they smell with their tongues? Why do some snakes use heat vision? Do snakes sleep? Why do snakes stick out their tongues so much?

Why do we feel pain when we get hurt? What is pain? Why do we cry when we get hurt? Why do we say ow or ouch? We’re learning about how pain works with Joshua Pate. He’s a physical therapist and author of a forthcoming children’s book series about pain.

Why do friends care about each other? How do you make friends? Can you have more than one best friend? How do you deal with a bully? We answer questions about friends and bullies with Dr. Friendtastic (also known as Eileen Kennedy-Moore), a psychologist and author of Growing Friendships: A Kids’ Guide to Making and Keeping Friends. And we get lots of advice from kids themselves about how to make friends and deal with bullies.