Dennis and Reggie discuss Reggie's latest vacation, answer questions, and listen to... WeWow on the Weekend? Plus, an encore of "And The Winner Is… RICEQUAKE!" Originally aired 8/2/25.

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Break out your overalls! Two Whats?! And a Wow is down on the farm! We're learning all about Farm Animals this week, so Mindy & Guy will be sorting the farming facts from the foolish farm funnies. Visit https://bit.ly/3zfwJMc for more info. Originally aired 9/13/24.

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Did you know bonobos have their very own way of talking to each other? In this Wow in the World episode, Mindy is using a new language learning app to try and help her communicate better with her pen-pal. The only issue is, her pen pal is an ape! From playful gestures to powerful vocalizations, bonobos use a language all their own to express feelings, build relationships, and keep their families connected. This jaw-dropping episode dives into the science of how bonobos communicate, why it matters for scientists, and what kids can learn about the importance of empathy, teamwork, and listening. Originally aired 9/15/25.

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Dennis and Reggie deliver a hot-off-the-press Reggie Report, answer questions, and listen to an encore of "An Elevator to the Stars!" 7/27/25.

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Dennis kicks things off with a brand new segment, "Dear Diary!" Plus, an encore of "Duck Duck Poop! A Tale of Symbiosis!" Originally aired 7/26/25.

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On the next episode of Two Whats?! And a Wow We Are climbing to new heights and saying “Yodel-lay-hee-Hooray” for mountains! Guy & Mindy will help you elevate your game with all the info you need to help you separate the mountains from the molehills... Want more WHATs and WOWs? Visit https://bit.ly/40hR1P0. Did you know you can watch full episodes of Two Whats?! And A Wow! on YouTube and YouTube Kids?! Visit https://bit.ly/3WlHLbk to start watching and WOWing with us! Originally aired 6/13/25.

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Mindy is throwing an EARTH day party! And she'll move mountains to decorate accordingly... literally! Put on your reusable party hats and join the Wow crew to celebrate 4.5 billion years of this big blue planet that we call home. It wouldn't be an Earth Day party without Earth Day presents... find out what kinds of bonkerballs gifts the crew has in store to keep our planet happy and healthy! It's the who, when, where, why, how and WOW of climate change! Originally aired 4/21/25.

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Reggie hosts a new installment of the Reggie Report, then Dennis and Reggie read Reviewsies and debut a thrilling new segment! Plus, an encore of "Horsefly Don't Bother Me! The Dazzling Mystery of Zebra Stripes!" Originally aired 7/20/25.

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 (try to) remember their dreams, answer questions, and talk about their upcoming talent show! Plus, an encore of "Scaredy Sharks and the Science of Fear!" Originally aired 7/19/25.

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This week's episode of Two Whats?! And a Wow is going to fly-by! Before you know it, your brain will be full of fun facts about birds and things with WINGS! Visit https://bit.ly/3zfwJMc for more. Originally aired 11/15/24.

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Grownups, we've partnered with our friends at Aspen Institute, Geocaching, and Nature Conservancy to encourage the Wowzers in your life to learn how to better take care of our planet by exploring places that WOW! Visit tinkercast.com/planetwow to learn more about our trailblazing, audio-filled, adventure-packed GeoTour to uncover geocaches filled with trackable Planet Wow! trading cards and more WOW surprises! And don't forget to call us at 1-888-7WOW-WOW to share the places on our planet that make you say "WOW!" Originally aired 9/22/25.

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Dennis brings a little razzle-dazzle to today's show, and he and Reggie debut a new segment! Plus, and encore of "Bored Out Of Your Bonkerballs? - Why Having Nothing To Do Can Be Good For You!" Originally aired 5/25/25.

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Baby Dennis and Baby Sock Dennis try hosting the show... then Dennis and Reggie answer your questions! Plus, an encore of "The Cubic Scoop on Wombat Poop!" Originally aired 5/24/25.

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We've got a JAWS-dropping edition of Two Whats?! And A Wow! this week, as we celebrate everyone's favorite ocean predator: The Shark! Visit https://bit.ly/3zfwJMc for more details. Originally aired 11/8/24.

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Humans are going back to the moon, and so is Mindy ... in her dreams! Join the gang as they travel though the endless dreamscape that is Mindy's mind and discover everything there is to know about NASA's Artemis moon program and they're attempt to land the first man on the moon in almost 50 years! It's the who, when, where, why, how and WOW of project Artemis! Originally aired 10/7/24.

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 practice good dental hygiene (sort of) and read reviewsies! Plus, and encore of "G-Force Vs. Wasabi: How The Brain Registers Pain!" Originally aired 5/18/25.

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 with a cool new toy, answer questions, and introduce a new member of the WeWow on the Weekend family. Plus, and encore of "An UnFROGettable Day At the Museum of Wow!" Originally aired 5/17/25.

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We're all about the solar system this week! The next episode of Two Whats?! And a Wow is all about PLANETS! Mindy & Guy Raz help us sort through some stellar silliness to get to the real Wows about these celestial bodies. Visit https://bit.ly/3zfwJMc for more details. Originally aired 11/29/24.

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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!

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.

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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.

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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.

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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!

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.

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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!

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!

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.

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 FIRE! Visit https://bit.ly/3zfwJMc for more. Originally aired 10/18/24.

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On the first Wednesday of every month, our pal Dennis holds an official meeting exclusively for members of the World Organization of Wowzers! (... but really anyone can listen...) W.O.W. Members, visit tinkercast.com/wow to find this month's birthday celebrations, top secret missions, and more!

Grownups, we're proud to bring free, high-quality educational podcasts to families and classrooms everywhere. But as the media industry changes, it's becoming increasingly difficult to financially sustain high-quality human-made audio shows like ours without additional help. If our shows have sparked wonder, laughter, or curiosity for your family, we're asking for your support now.

Grownups, you can give what you can, or visit tinkercast.com/support where you can select from a handful of gifts we've curated to thank you for your support.

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

Aha moments don't happen by trying harder — they happen when your brain has space to wander!

Join Guy, Mindy, and the gang as they explore the brain science of Aha moments, creative problem solving, and why daydreaming boosts both creativity and problem solving.

After Guy spends two hours searching for glasses that are on his head, Mindy shares research connected to scientists at the University of Tokyo showing that mind wandering helps the brain form new connections and spark insight.

To test the science, Mindy, Guy, and the gang tackle a classic river-crossing brain teaser in the wilderness — where nobody can be left alone without chaos erupting.

In this STEM podcast episode, you'll discover:

• What happens in the brain during an Aha! moment

 • Why overthinking blocks creative problem solving

 • How mind wandering strengthens flexible thinking

If you struggle with puzzles, creative blocks, or problem solving, this episode is packed with science-backed tools to build a growth mindset and unlock better ideas!

Sometimes the smartest move isn't focusing harder.

It's letting your brain wander.

It's the Who, When, Wow, How, and WOW of AHA! moments and the brain!

📺 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!

This episode of Wow in the World is a perfect blend of storytelling and science, inviting kids and families to dive into brain science and creative problem-solving 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.

It's not quite breakfast... it's not quite lunch... Dennis and Reggie open a brunch restaurant! Plus, an encore of "3D Printing the Future!" If you have a question for Dennis, leave him a voicemail at 1-888-7WOW-WOW. Your question might just end up on WeWow on the Weekend! Originally aired 11/24/24.

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

Dennis shows off some slight-of-hand magic! Plus, a Q&A segment and an encore of "Ladies & Germs, Meet The Supervillain Superbugs!" If you have a question for Dennis, leave him a voicemail at 1-888-7WOW-WOW. Your question might just end up on WeWow on the Weekend! Originally aired 11/23/24.

Grownups, we're proud to bring free, high-quality educational podcasts to families and classrooms everywhere. But as the media industry changes, it's becoming increasingly difficult to financially sustain high-quality human-made audio shows like ours without additional help. If our shows have sparked wonder, laughter, or curiosity for your family, we're asking for your support now. 

Grownups, visit tinkercast.com/support where you can select from a handful of gifts we've curated to thank you for your support.

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

This week, we've got a nutritious AND delicious episode of Two Whats?! And a Wow for you. Guy & Mindy bring you fun facts and nuggets of nonsense all about – Vegetables! Love ‘em or hate ‘em, we're gonna serve them up WOW-style!

Grownups, we're proud to bring free, high-quality educational podcasts to families and classrooms everywhere. But as the media industry changes, it's becoming increasingly difficult to financially sustain high-quality human-made audio shows like ours without additional help. If our shows have sparked wonder, laughter, or curiosity for your family, we're asking for your support now. 

Grownups, visit tinkercast.com/support where you can select from a handful of gifts we've curated to thank you for your support.

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

It's the Extraordinary Expectoration World Championships! What's that you ask? Only the most important event in the world of competitive spitting! Grandma G-Force goes up against some of the best spitters in the animal kingdom in this fascinating and somewhat disgusting championship bout. It's the who, when, why, how and WOW of expectoration! Originally aired 9/2/24.

Grownups, we're proud to bring free, high-quality educational podcasts to families and classrooms everywhere. But as the media industry changes, it's becoming increasingly difficult to financially sustain high-quality human-made audio shows like ours without additional help. If our shows have sparked wonder, laughter, or curiosity for your family, we're asking for your support now. 

Grownups, visit tinkercast.com/support where you can select from a handful of gifts we've curated to thank you for your support.

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