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Tinkercast | Wondery


The #1 science podcast for kids and their grown-ups. Hosts Mindy Thomas and Guy Raz share stories about the latest news in science, technology, and innovation. Stories that give kids hope, agency and make us all say "WOW"!

New episodes come out every Monday for free. Listen 1-week early and to all episodes ad-free with Wondery+, Wondery+ Kids on Apple Podcasts, or Amazon Music with a Prime membership or Amazon Music Unlimited subscription.


Wow in the World

After a week at Gentleness Training, Gramma G-Force is back—and she’s got a mission: keep a raw egg baby from cracking for an entire week! But can the galaxy’s toughest grandma really go soft? Mindy and Guy dive into the science of eggshells, revealing surprising research about whether they're more likely to break on their sides or their more narrow ends. With her new scientific smarts, can Gramma G-Force keep her egg baby “alive" or will she be sent back to gentleness training to start all over again? It’s the WHO, WHAT, WHEN, WHERE, WHY, HOW, AND WOW in the World of cracking eggs!

For more WOWs online, visit https://bit.ly/3DWotmC. 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!

Join the World Organization of Wowzers today and receive quarterly mailings and birthday cards, access to 1000+ digital activities, first dibs at live show tickets, plus a welcome kit with t-shirt and an autograph from Mindy & Guy Raz! Visit https://bit.ly/40xiRrH to sign your Wowzer up for a membership to the World Organization of Wowzers today!

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

Egg Drop: The Science Behind Cracking Eggs (8/25/25)

Dennis is on a mission to pack in the laughs, and QUICK! Plus an encore episode, “How Pandas Got Their Spots!” 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! For more WeWow visit https://bit.ly/3nkbEuo. Originally aired 6/18/23.

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

WeWow on the Weekend (8/24/25)

Dennis and Reggie read some oddly turtle-specific reviewsies. Plus an encore episode, “Invite Yourself to Dinner!” 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! For more WeWow visit https://bit.ly/3nkbEuo. Originally aired 6/17/23.

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

WeWow on the Weekend (8/23/25)

Time to get your track shoes on! This episode of Two Whats?! And a Wow is all about running animals. Guy & Mindy will share their need for speed and help you separate the “Whats?” from the “Wows!” about how some of the earth’s most interesting creatures get their run on. 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!

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

Two Whats?! And A Wow! - Runaway Critters (8/22/25)

While Mindy and Guy Raz are up to an adventure, Dennis and Reggie find themselves on a supersonic NASA adventure in a new X-59 aircraft! Could supersonic flight be in our future?! It's the who, when, how and WOW of flight! Originally aired 7/25/22.

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’s Wild Ride! (8/18/25)

Dennis and Reggie make brunch with questionable ingredients. Plus an encore episode, “Cow Toots and Crickets!” 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! For more WeWow visit https://bit.ly/3nkbEuo. Originally aired 6/11/23.

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

WeWow on the Weekend (8/17/25)

Dennis reads reviews from YOU, his devoted listeners! Plus an encore episode, “Dogs and Humans!” 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! For more WeWow visit https://bit.ly/3nkbEuo. Originally aired 6/10/23. 

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

WeWow on the Weekend (8/16/25)

No bones about it, the next episode of Two Whats?! And a Wow will is a skeletal celebration! It’s fun with femurs as Guy & Mindy get down to the bare bones with some fascinating facts about the amazing materials that hold up our bodies! 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!

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

Two Whats?! And A Wow! - Skeleton of Fun (8/15/25)

Ding ding ding! Mindy and Guy win big on Bongo and the Big Toots morning radio show, their prize? A weekend away at a state of the art research facility in the middle of the desert! Even better, they're allowed to bring along 4 of their closest friends/neighbors. What could possibly go wrong? It's the who, when, why, how and WOW of life sized terrariums! Originally aired 10/14/24.

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

A Weekend at BioWorld (8/11/25)

Dennis and Reggie read Reviewsies, taste-test some puzzling foods, and freestyle-rap about... cheese? Plus, and encore of "Drop That Beat and Cut The Cheese...For Science!"

Want a chance to be featured on an upcoming episode of WeWow? Dennis wants to hear from YOU! Leave Dennis a message at 1-888-7WOW-WOW, or send him a comment or review on our podcast feed!! Want more WeWow?! Visit https://bit.ly/4g2QjLp for even more WOWs online.

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! Join the World Organization of Wowzers today and receive quarterly mailings and birthday cards, access to 1000+ digital activities, first dibs at live show tickets, plus a welcome kit with t-shirt and an autograph from Mindy & Guy Raz! Visit https://bit.ly/40xiRrH to sign your Wowzer up for a membership to the World Organization of Wowzers today!

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

WeWow on the Weekend (8/10/25)

Gramma G-Force needs a new home, so Mindy comes up with a new plan to make her one! Join Mindy, Guy Raz, and the Wow Crew as they construct a house out of some unlikely ingredients. It's the who, what, when, where, why, how and WOW of DIAPERS! Check Wow in the World activities at https://bit.ly/3V5YCgw

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

A Diaper Home for G-Force (7/31/23)

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