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.

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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.

Dennis has a bad hair day and invents a new segments to fix it. Plus an encore episode of, “An Intergalactic Interloper!” Originally aired 3/8/25.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

The next episode of Two Whats?! And a Wow will either make you squeak or say “Eeeek!”-- depending upon how you feel about… Rodents! Guy & Mindy will give you the 411 on rats, mice and some other amazing critters. Originally aired 1/26/24.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

What happens when biodegradable plastic bags meet the tiny, powerful creatures living in our oceans? In this episode about environmental ocean science, Mindy and Guy take you on a wild ride to explore a scientific breakthrough in biodegradable plastic bags! Listen and and discover how microscopic ocean microbes devour this new plastic, turning it into harmless byproducts. From supermarket chaos to microscopic environmental ocean science, this adventure is full of funny funny hijinx, big adventure, and a breakthrough in biodegradable plastic technology. By connecting laughter to learning, this environmental ocean science episode shows how science and fun can sometimes collide in the most unexpected ways.

It all starts in a bustling eco-conscious supermarket, where Mindy’s stash of plastic bags sparks total chaos, teaching listeners why choosing biodegradable plastic bags over single-use plastics can make a big difference for the environment. Then, back at Mindy’s gingerbread mansion, the real fun begins. She drops the bags into a giant seawater tank and, with the help of the incredible Wow Machine, shrinks down to microscopic size to witness ocean microbes at work. These tiny, hungry organisms munch, digest, and transform the plastic, turning it into safe byproducts—all while Mindy and Guy provide hilarious commentary and clear explanations of the science.

Along the way, you’ll learn that these biodegradable plastic bags can lose 80% of their mass in just over a year, compared to normal plastics that take hundreds of years to disappear. You’ll also explore the role of microbes in ocean ecosystems, see why the Great Pacific Garbage Patch is a massive environmental challenge, and discover how smart, eco-friendly inventions like biodegradable plastic bags could help protect marine life. These ocean experiments for kids highlight the invisible teamwork happening in nature and make it easy to understand how science solves real-world problems—while keeping the fun high and the laughs constant.

Get ready for a whirlwind adventure full of chaos, clever science, and lots of laughter. From flying tomatoes in a supermarket to shrinking down inside a giant seawater tank, Mindy and Guy show how biodegradable plastic bags work in action, why microbes are nature’s unsung heroes, and how small changes in our daily lives can have a big impact on the environment. This is the Who, What, When, Where, Why, How, and Wow in the World of biodegradable plastics and ocean microbes, brought to life with humor, curiosity, and a whole lot of WOW!

📺 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 dive into the mysteries of biodegradable plastic 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.

Reggie loses track of time and Dennis starts the show without him. Then they read reviewsies. Plus an encore episode of, “Hey Onion! You’re Making Me Cry!” Originally aired 3/2/25.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Dennis gets a goldfish and he and Reggie struggle to name it. Then they answer voicemails. Plus an encore episode of, “BANG! Where'd the Universe Come From?!” Originally aired 3/1/25.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.