How does this little fish cause big problems for an ecosystem? In this ecology adventure about invasive species, freshwater ecosystems, animal behavior, and the surprising power of a pet goldfish, Mindy, Guy Raz, Dennis, Gramma G-Force, and Thomas Fingerling dive into a wild mystery: how could one tiny pet fish grow into a giant aquatic menace capable of disrupting an entire lake? Listen and discover what can happen when a goldfish is released into the wild—and why a pet that seems harmless at home can become a major problem in the wrong environment! This episode shows how every creature plays a role in an ecosystem—and how changing just one part of the system can have ripple effects throughout the whole environment.

When Dennis leaves his beloved pet goldfish, Goldibob, with Gramma G-Force for the weekend, she decides Goldibob needs to get out of her fish bowl and experience the big, wide world. What starts as a trip to a nearby pond quickly turns into a full-blown ecological disaster—and a breaking news story!

In this episode, kids and families will discover what an ecosystem is and how plants, animals, and their environment depend on one another. They’ll learn why goldfish released into lakes and ponds can grow much larger than they do in aquariums, stir up mud and sediment while feeding along the bottom, make water cloudy, eat tiny creatures like snails and zooplankton, and compete with native fish for food. They’ll also discover how scientists use controlled miniature ecosystems to investigate what happens when an invasive species enters a freshwater environment, and why releasing a pet into the wild can cause unexpected consequences!

This is the Who, What, When, Where, Why, How, and WOW of goldfish, invasive species, freshwater ecosystems, food webs, animal behavior, and the surprising science of what happens when a pet fish goes wild!

✨ Don’t miss the chance to explore even further with Wow in the World:

Grownups can visit tinkercast.com/join-twaaw 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 comedy, storytelling, ecology, biology, and environmental science, inviting kids and families to discover how one seemingly harmless pet can have a huge impact on the natural world—all 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.

What do charcuterie boards and hot chili peppers have in common? This episode of WeWow, the bonkerballs variety show for kids and families from the creators of Wow in the World, has all of that and more. Dennis and Reggie are back with another weekend full of laughs, listener love, and a spiciness encore episode that'll have the whole family talking all over again. Whether you're a longtime Wowzer or just tuning in, WeWow on the Weekend is the kind of family variety podcast that makes every car ride, breakfast table, and slow Sunday morning a little more wow-worthy.

This week, Dennis and Reggie put together a charcuterie board in a cooking segment! And if that's not enough, WeWow on the Weekend wraps up with a fan-favorite encore of "Totally Spiced Out!" from Wow in the World—an episode about what makes chili peppers spicy, and how we measure their spiciness, packed with big ideas, bigger laughs, and the kind of curiosity that makes the whole family lean in.

"Totally Spiced Out!" originally aired on December 11th, 2017, and explores capsaicin, the compound in chili peppers that makes them spicy! Dennis and Reggie revisit all the wow-worthy moments and bring their signature bonkerballs energy to a topic that's equal parts wild, important, and totally fascinating.

WeWow on the Weekend is part of the Tinkercast family of podcasts, created by the award-winning team behind the #1 science podcast for kids and families, Wow in the World. Every weekend, Dennis and his co-host Reggie answer listener questions, respond to fan reviews, play games, and celebrate the best moments from across the Tinkercast universe. It's a talk, talk, talk show unlike any other — and it's always better when YOU'RE part of it.

Want to hear your name on WeWow? Send Dennis a question or leave a podcast review for a chance to be featured on the show! You can also leave a message for Dennis at 1-888-7WOW-WOW!

Grownups, want to keep the Wow going? Join the World Organization of Wowzers (W.O.W.) at tinkercast.com/joinwewow and your Wowzers will receive quarterly mailings, birthday cards, a welcome kit with a t-shirt, autographed photo of Mindy & Guy Raz, access to 1,000+ digital activities, and exclusive access to members-only events!

This episode of WeWow is the perfect family variety podcast for Wowzers of all ages, full of charcuterie boards and capsaicin that will blow your socks off.

Originally aired 2/11/24.

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

What do Reviewsies and coral reefs have in common? This episode of WeWow, the bonkerballs variety show for kids and families from the creators of Wow in the World, has all of that and more. Dennis and Reggie are back with another weekend full of laughs, listener love, and a coral reef encore episode that'll have the whole family talking all over again. Whether you're a longtime Wowzer or just tuning in, WeWow on the Weekend is the kind of family variety podcast that makes every car ride, breakfast table, and slow Saturday morning a little more wow-worthy.

This week, Dennis asks Reggie about how he got so giant, and they both read some Reviewsies! And if that's not enough, WeWow on the Weekend wraps up with a fan-favorite encore of "Oh My Bleach! Save Our Reef!" from Wow in the World—an episode about the Great Barrier Reef, packed with big ideas, bigger laughs, and the kind of curiosity that makes the whole family lean in.

"Oh My Bleach! Save Our Reef!" originally aired on December 4th, 2017, and explores something called "coral bleaching" taking place in the Great Barrier Reef in Australia! Dennis and Reggie revisit all the wow-worthy moments and bring their signature bonkerballs energy to a topic that's equal parts wild, important, and totally fascinating.

WeWow on the Weekend is part of the Tinkercast family of podcasts, created by the award-winning team behind the #1 science podcast for kids and families, Wow in the World. Every weekend, Dennis and his co-host Reggie answer listener questions, respond to fan reviews, play games, and celebrate the best moments from across the Tinkercast universe. It's a talk, talk, talk show unlike any other — and it's always better when YOU'RE part of it.

Want to hear your name on WeWow? Send Dennis a question or leave a podcast review for a chance to be featured on the show! You can also leave a message for Dennis at 1-888-7WOW-WOW!

Grownups, want to keep the Wow going? Join the World Organization of Wowzers (W.O.W.) at tinkercast.com/joinwewow and your Wowzers will receive quarterly mailings, birthday cards, a welcome kit with a t-shirt, autographed photo of Mindy & Guy Raz, access to 1,000+ digital activities, and exclusive access to members-only events!

This episode of WeWow is the perfect family variety podcast for Wowzers of all ages, full of Reviewsies and coral reefs that will blow your socks off.

Originally aired 2/10/24.

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

We’re spinning a web of WOW in this round of Two What’s?! And A Wow! Find the facts from the fiction about SPIDERS!

✨ Don’t miss the chance to laugh together even more:

Grownups can visit tinkercast.com/join-twaaw 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 Two Whats?! And A Wow! introduces kids and families to the wows of spiders through gameplay, storytelling, and contributions from other curious kids!

Originally aired 7/4/25.

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

On the first Wednesday of every month, the President of the World Organization of Wowzers, Dennis, holds an official meeting exclusively for members of the World Organization of Wowzers! On this month’s agenda: Baby Dennis’s unicycle recital, welcoming the newest new members, and a new segment – Ask Dennis Anything! W.O.W. Members, visit tinkercast.com/wow to find this month’s birthday celebrations, top secret missions, and more!

Want to hear more? Become a W.O.W. member today to unlock access ad-free and bonus content, like this episode and 200 more from the full Tinkercast library! Grown-ups, visit tinkercast.com/wow to join the W.O.W. now!

Already a member? Listen to the full episode now once you unlock access to our members-only podcast feeds at tinkercast.com/wow when you're signed into your account!

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

When Mindy, Guy Raz, and the crew head out for a peaceful camping trip in the South Carolina wilderness, they expect campfires, marshmallows, and maybe a few spooky stories. But when a mysterious glowing orb appears floating in the darkness, everyone starts wondering: Is it a... ghost?! In this episode about earthquake lights, geology, and the surprising science beneath our feet, the crew sets off on a nighttime adventure to uncover the truth behind one of nature’s most mysterious glowing phenomena!

Listen and discover how rare “earthquake lights” may form when tiny movements in the Earth cause rocks containing minerals like iron and magnesium to generate electrical charges that can make the air glow! Along the way, the Wow crew learns that sometimes the scariest-looking mysteries have a spectacular scientific explanation.

Get ready for a spooky, science-filled camping adventure packed with glowing mysteries, hilarious chaos, questionable campfire snacks, and a whole lot of WOW! From haunted railroad stories to mysterious lights and a very unexpected bear encounter, Mindy and Guy discover that sometimes the real magic isn’t a ghost story... it’s the science hiding beneath our feet! This is the Who, What, When, Where, Why, How, and Wow in the World of earthquake lights, geology, and the electrifying science of our planet, brought to life with humor, curiosity, and a whole lot of WOW!

✨ Don’t miss the chance to explore even further with Wow in the World:

Grownups can visit tinkercast.com/join-twaaw 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 spooky storytelling, comedy, and earth science, inviting kids and families to venture into the wilderness, investigate a mysterious glowing light– all while laughing, learning, and wowing together.

Originally aired 6/9/25.

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

What do trading cards, Reviewsies, and the Ice Age have in common? This episode of WeWow, the bonkerballs variety show for kids and families from the creators of Wow in the World, has all of that and more. Dennis and Reggie are back with another weekend full of laughs, listener love, and a chilly encore episode that'll have the whole family talking all over again. Whether you're a longtime Wowzer or just tuning in, WeWow on the Weekend is the kind of family variety podcast that makes every car ride, breakfast table, and slow Sunday morning a little more wow-worthy.

This week, Dennis and Reggie look at some Gnocchi-mon cards and read Reviewsies! And if that's not enough, WeWow on the Weekend wraps up with a fan-favorite encore of "Comets, Ice Age, and Human Civilization" from Wow in the World—an episode about the Pleistocene Epoch, packed with big ideas, bigger laughs, and the kind of curiosity that makes the whole family lean in.

"Comets, Ice Age, and Human Civilization" originally aired on June 29th, 2017, and explores what life was like on Earth 20,000 years ago during the last Ice Age! Dennis and Reggie revisit all the wow-worthy moments and bring their signature bonkerballs energy to a topic that's equal parts wild, important, and totally fascinating.

WeWow on the Weekend is part of the Tinkercast family of podcasts, created by the award-winning team behind the #1 science podcast for kids and families, Wow in the World. Every weekend, Dennis and his co-host Reggie answer listener questions, respond to fan reviews, play games, and celebrate the best moments from across the Tinkercast universe. It's a talk, talk, talk show unlike any other — and it's always better when YOU'RE part of it.

Want to hear your name on WeWow? Send Dennis a question or leave a podcast review for a chance to be featured on the show! You can also leave a message for Dennis at 1-888-7WOW-WOW!

Grownups, want to keep the Wow going? Join the World Organization of Wowzers (W.O.W.) at tinkercast.com/joinwewow and your Wowzers will receive quarterly mailings, birthday cards, a welcome kit with a t-shirt, autographed photo of Mindy & Guy Raz, access to 1,000+ digital activities, and exclusive access to members-only events!

This episode of WeWow is the perfect family variety podcast for Wowzers of all ages, full of Gnocchi-mon, Reviewsies, and ice ages that will blow your socks off.

Originally aired 10/22/23.

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

What do special effects, compliments, and dinosaur backbones have in common? This episode of WeWow, the bonkerballs variety show for kids and families from the creators of Wow in the World, has all of that and more. Dennis and Reggie are back with another weekend full of laughs, listener love, and a spine-tingling encore episode that'll have the whole family talking all over again. Whether you're a longtime Wowzer or just tuning in, WeWow on the Weekend is the kind of family variety podcast that makes every car ride, breakfast table, and slow Saturday morning a little more wow-worthy.

This week, Reggie surprises Dennis with some voice-changing effects, and Dennis asks the questions that he wants answered! And if that's not enough, WeWow on the Weekend wraps up with a fan-favorite encore of "Dinosaurs’ Puzzling Backbones" from Wow in the World—an episode about the strength of dinosaurs' backbones, packed with big ideas, bigger laughs, and the kind of curiosity that makes the whole family lean in.

"Dinosaurs’ Puzzling Backbones" originally aired on June 15th, 2017, and explores how giant dinosaurs like sauropods were able to carry all of their body weight around! Dennis and Reggie revisit all the wow-worthy moments and bring their signature bonkerballs energy to a topic that's equal parts wild, important, and totally fascinating.

WeWow on the Weekend is part of the Tinkercast family of podcasts, created by the award-winning team behind the #1 science podcast for kids and families, Wow in the World. Every weekend, Dennis and his co-host Reggie answer listener questions, respond to fan reviews, play games, and celebrate the best moments from across the Tinkercast universe. It's a talk, talk, talk show unlike any other — and it's always better when YOU'RE part of it.

Want to hear your name on WeWow? Send Dennis a question or leave a podcast review for a chance to be featured on the show! You can also leave a message for Dennis at 1-888-7WOW-WOW!

Grownups, want to keep the Wow going? Join the World Organization of Wowzers (W.O.W.) at tinkercast.com/joinwewow and your Wowzers will receive quarterly mailings, birthday cards, a welcome kit with a t-shirt, autographed photo of Mindy & Guy Raz, access to 1,000+ digital activities, and exclusive access to members-only events!

This episode of WeWow is the perfect family variety podcast for Wowzers of all ages, full of voice changers, questions, and backbones that will blow your socks off.

Originally aired 10/21/23.

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

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!

✨ Don’t miss the chance to laugh together even more:

Grownups can visit tinkercast.com/join-twaaw 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 Two Whats?! And A Wow! introduces kids and families to the wows of bones through gameplay, storytelling, and contributions from other curious kids!

Originally aired 8/15/25.

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

It's a bird! It's a plane! It's... a robot cockroach? In this cinematic story about cockroaches, cyborg technology, search-and-rescue science, and underwater exploration, Mindy, Guy Raz, and the crew take you on a wild adventure to discover how scientists are transforming an unlikely insect into a tiny, remote-controlled rescue robot! Listen and discover how researchers combined living creatures, robotics, engineering, and a teeny-tiny scuba suit to create a cyborg cockroach that can be steered through tight spaces, survive underwater, and potentially help humans reach places that traditional robots can’t! This adventure is packed with movie-theater mayhem, hilarious hijinks, scientific surprises, and one seriously superpowered six-legged hero. By connecting laughter to learning, this cockroach episode shows how scientists can look to the natural world for unexpected solutions to some of humanity’s biggest challenges.

While heading to the movies to see Pigeon Patrol, Mindy, Guy, Dennis, Reggie, Gramma G-Force, and Thomas Fingerling stumble across a preview for a very different kind of superhero movie: RoachBot: Super Cyborg Scuba Scout! But when Mindy discovers that the movie is inspired by a real scientific study, their trip to the theater quickly turns into a real-life science adventure!

In this episode, kids and families will discover what a cyborg actually is, and how scientists can combine living organisms with technology. They’ll learn why cockroaches make surprisingly useful search-and-rescue helpers, thanks to their ability to squeeze through tiny spaces, scramble over messy terrain, and move using their own muscles without needing batteries. They’ll also discover how engineers designed a miniature waterproof shell and oxygen system that allowed a cyborg cockroach to walk underwater for hours before returning to land. What can't RoachBot handle?!

This is the Who, What, When, Where, Why, How, and WOW of cyborg cockroaches, search-and-rescue robots, scuba science, and the wild possibilities of bio-inspired technology, brought to life with humor, curiosity, engineering, and a whole lot of WOW!

✨ Don’t miss the chance to explore even further with Wow in the World:

Grownups can visit tinkercast.com/join-twaaw 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 comedy, storytelling, biology, robotics, and engineering, inviting kids and families to discover how an unlikely insect could become a tiny high-tech hero– all 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.

What do card games, Reviewsies, and sea pickles have in common? This episode of WeWow, the bonkerballs variety show for kids and families from the creators of Wow in the World, has all of that and more. Dennis and Reggie are back with another weekend full of laughs, listener love, and a marine biology encore episode that'll have the whole family talking all over again. Whether you're a longtime Wowzer or just tuning in, WeWow on the Weekend is the kind of family variety podcast that makes every car ride, breakfast table, and slow Sunday morning a little more wow-worthy.

This week, Dennis and Reggie put their game of "go fish" on hold to read some Reviewsies! And if that's not enough, WeWow on the Weekend wraps up with a fan-favorite encore of "Invasion of the Sea Pickles" from Wow in the World—an episode about pyrosomes, packed with big ideas, bigger laughs, and the kind of curiosity that makes the whole family lean in.

"Invasion of the Sea Pickles" originally aired on August 28th, 2017, and explores the undersea organisms known as "sea pickles," or pyrosomes! Dennis and Reggie revisit all the wow-worthy moments and bring their signature bonkerballs energy to a topic that's equal parts wild, important, and totally fascinating.

WeWow on the Weekend is part of the Tinkercast family of podcasts, created by the award-winning team behind the #1 science podcast for kids and families, Wow in the World. Every weekend, Dennis and his co-host Reggie answer listener questions, respond to fan reviews, play games, and celebrate the best moments from across the Tinkercast universe. It's a talk, talk, talk show unlike any other — and it's always better when YOU'RE part of it.

Want to hear your name on WeWow? Send Dennis a question or leave a podcast review for a chance to be featured on the show! You can also leave a message for Dennis at 1-888-7WOW-WOW!

Grownups, want to keep the Wow going? Join the World Organization of Wowzers (W.O.W.) at tinkercast.com/joinwewow and your Wowzers will receive quarterly mailings, birthday cards, a welcome kit with a t-shirt, autographed photo of Mindy & Guy Raz, access to 1,000+ digital activities, and exclusive access to members-only events!

This episode of WeWow is the perfect family variety podcast for Wowzers of all ages, full of go-fish, reviewsies, that will blow your socks off.

Originally aired 10/15/23.

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