In this high-speed episode of Wow in the World, Mindy and Guy Raz turbocharge an ordinary day… It’s the 25th-Annual DIY Homemade Go-Kart Derby! But in classic Mindy fashion, she isn’t showing up with just any homemade kart—she’s built a cutting-edge Formula 1-style race car! As it turns out, Formula 1 racing is basically “one giant science fair,” powered by teams of scientists working to design the fastest cars possible! Of course, getting to the race is no simple task. Instead of driving, Mindy insists on preserving the precious engine by enlisting the sleigh cats’ help to pull the car. At the track, they meet their driver– a familiar and unlikely face– and prepare for the big race. As the countdown begins, excitement builds, blending science, silliness, and speed into a wildly entertaining race-day finale! Packed with humor, wild antics, and fascinating STEM concepts, this episode shows how science fuels everything from backyard projects to the fastest cars on Earth. 📺 You can watch the WOW of this episode right now on our YouTube channel, WowTube! Find your favorite Tinkercast podcast episodes, experiments with Mindy, original music with Dennis and so much more at youtube.com/@tinkercast. ✨ Don’t miss the chance to explore even further with Wow in the World: Grownups can visit https://bit.ly/4pU76WO to join the World Organization of Wowzers (WOW) and unlock exclusive activities, birthday cards, quarterly mailings, first dibs at events, and a welcome kit with an autographed photo of Mindy & Guy Raz! Plus, Grownups help support our podcast and our mission to create content and experiences that connect laughter to learning, curiosity to innovation and kids to the WOWs in their world! 🔒 Privacy Links: See Privacy Policy at https://art19.com/privacy California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info This episode of Wow in the World is perfect for kids and families who enjoy the science and thrills of Formula 1 race cars! See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Dennis and Reggie have a crafternoon. Plus an encore episode of, “Heeeere Foodie, Foodie! Edible Insects on the Menu!” Originally aired 3/23/25. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Reggie performs a magic trick and Dennis listens to voicemails. Plus an encore episode of, “Song Of The Singing Mouse!” Originally aired Originally aired 3/22/25. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Our next episode of Two Whats?! And a Wow will really pull you in... No REALLY... It’s all about BLACK HOLES! And Guy and Mindy will bring you a supernova of fan and facts about these interstellar vortexes. Originally aired 10/11/24. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Get your whiskers ready! In this episode of Wow in the World, Mindy and Guy Raz step onto the wildest game show ever: The Purrr-fect Match–where cats sniff out their humans based on smell! Inspired by a real scientific cat study from Tokyo University of Agriculture, this episode dives into the science of how cats recognize (or ignore!) their humans, all while navigating a backstage full of chaos, celebrity cats, flying pennies, and one Gramma G-Force. Laugh, learn, and discover why sometimes the “wrong” answer is actually the purr-fect one!  📺 You can watch the WOW of this episode right now on our YouTube channel, WowTube! Find your favorite Tinkercast podcast episodes, experiments with Mindy, original music with Dennis and so much more at youtube.com/@tinkercast. ✨ Don’t miss the chance to explore even further with Wow in the World: Grownups can visit https://bit.ly/4pU76WO to join the World Organization of Wowzers (WOW) and unlock exclusive activities, birthday cards, quarterly mailings, first dibs at events, and a welcome kit with an autographed photo of Mindy & Guy Raz! Plus, Grownups help support our podcast and our mission to create content and experiences that connect laughter to learning, curiosity to innovation and kids to the WOWs in their world! 🔒 Privacy Links: See Privacy Policy at https://art19.com/privacy California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info This episode of Wow in the World is a perfect blend of storytelling and science, inviting kids and families to explore real and rare research about cats while laughing, learning, and wowing together. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Dennis and Reggie play a round of Eye Spy and listen to voicemails. Plus an encore episode of, “Getting Nosey about the Science of Smell!" Originally aired 3/16/25. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Reggie brings donuts into the basement and Dennis reads Reviewsies. Plus an encore episode of, “Operation Earth: How to be Cool to a Planet that's Hot! Originally aired 3/15/25. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

We've got the questions AND answers in this out of this world round of Two Whats?! And a Wow! We're challenging you to find the facts from the fiction about STRENGTH! Originally aired 3/22/24. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

In this laugh-inducing, hair-raising, and educational episode of Wow in the World, Mindy, Guy Raz, and the WOW crew learn about a new way to help strengthen teeth! Dennis reveals his brand-new haircut - a perfectly round, helmet-shaped hairstyle hardened with hair gel. While the crew struggles to compliment the new ‘do, the conversation quickly spirals into unexpected territory when Thomas Fingerling and Gramma G-Force insist that Dennis made a terrible mistake by throwing away his hair clippings… According to them, everyone knows hair clippings should be placed under your pillow for the mysterious “Hairy Fairy,” who sneaks in through the keyhole to collect them. If the hair is strong, you might get a prize - maybe even a yacht. If it’s weak? Expect a boiled egg. But amid the bonkerballs chatter, Mindy realizes something: the Hairy Fairy’s strange obsession with hair might actually connect to real science. She shares an incredible new study from scientists at King’s College London showing that keratin - the protein that makes up our hair and nails - could someday help repair damaged tooth enamel. Since enamel is the hardest material in the human body, but can’t grow back once it wears away, researchers have been searching for ways to rebuild or strengthen it. Their discovery? When keratin interacts with minerals in saliva, it can help form a protective crystal coating on teeth! This coating could potentially strengthen enamel and even outperform the plastic resin materials dentists currently use - making teeth far more resistant to cavities. In the future, keratin from hair could be added to toothpaste, mouthwash, or dental treatments to protect smiles everywhere! With rollerblades, hair helmets, imaginary creatures, and cutting-edge dental research all colliding in one hilarious adventure, this episode proves that even a haircut can lead to jaw-dropping science. 📺 You can watch the WOW of this episode right now on our YouTube channel, WowTube! Find your favorite Tinkercast podcast episodes, experiments with Mindy, original music with Dennis and so much more at youtube.com/@tinkercast. ✨ Don’t miss the chance to explore even further with Wow in the World: Grownups can visit https://bit.ly/4pU76WO to join the World Organization of Wowzers (WOW) and unlock exclusive activities, birthday cards, quarterly mailings, first dibs at events, and a welcome kit with an autographed photo of Mindy & Guy Raz! Plus, Grownups help support our podcast and our mission to create content and experiences that connect laughter to learning, curiosity to innovation and kids to the WOWs in their world! 🔒 Privacy Links: See Privacy Policy at https://art19.com/privacy California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Dennis and Reggie read Reveiwsies and end up doing some stunts. Plus an encore episode of, “That's Nuts!” Originally aired 3/9/25. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.