Guy Raz receives a very mysterious invitation in the mail ... one that's over 150 years old! It's an invitation to the Metric Convention; the kick off party that launched the Metric System! But why Guy Raz? And why 150 years too late? Mindy and Guy travel back in time to 18th century France to learn all about the creation of the metric system and to find out how sent the invitation to Guy Raz in the first place. It's the Who, When, Why, How and Wow of the Meter!

Grownups, visit tinkercast.com/planetwow to learn more about our trailblazing, audio-filled, adventure-packed GeoTour designed to get you and your family out into nature and on a mission to uncover geocaches filled with trackable Planet Wow! trading cards and more WOW surprises!

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.

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!"

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.

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!"

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.