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!

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Happy 150th Birthday - The Story of the Metric System (5/19/25) 25:25 Share

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Happy 150th Birthday - The Story of the Metric System (5/19/25)