More than 154 million treasures fill the Smithsonian’s vaults. But where the public’s view ends, Sidedoor begins. With the help of biologists, artists, historians, archaeologists, zookeepers and astrophysicists, host Lizzie Peabody sneaks listeners through the Smithsonian’s side door, telling stories that can’t be heard anywhere else

Recent Episode(s)

Sep 27, 2023

Cellphones Rock

Cellphones put the power of the world at our fingertips. With the touch of a finger, you can instantly connect with your doctor, have food delivered t…

Sep 13, 2023

The 'Gentle Anarchy' of the Muppets

Icky Gunk. Moldy Hay. Kermit. You might recognize one of these names. Before Kermit joined Miss Piggy and Big Bird, he was kicking it with Sam and Fri…

Sep 6, 2023

It's Season 10!

Sidedoor returns for its tenth season on Wednesday, September 13th!

Aug 30, 2023

A Wild Ride on the Pony Express

In 1860 the fastest way to get a message to a family member, partner, or colleague wasn’t by text but by hoof…specifically, a pony’s. In just te…

Aug 17, 2023

The Hungerford Deed

When a 200-year-old legal document anonymously arrived at his office, Smithsonian Libraries and Archives conservator William Bennett assumed it woul…

Aug 2, 2023

Tyrannosaurus FX

When you imagine the sound of a dinosaur, you probably think of a scene from the Jurassic Park movies. How do sound designers make these extinct creat…

Jul 19, 2023

Special: People Eating People

A Smithsonian researcher has made a discovery we couldn't wait to sink our teeth into — what might be the earliest evidence of our human ancestors e…

Jul 5, 2023

The Toxic Book of Faces

Before the invention of photography, only the rich could afford to have portraits of themselves. But in the early 1800s, a device called the physiogno…

Jun 21, 2023

Building a Movement

America has a long history of clustering heavy industry and toxic facilities in communities where people of color live. But in the 1980s, a series of…

Jun 7, 2023

Recording the World

In 1948, Moses Asch set out with an ambitious project: to document the world’s sounds! 75 years later, that project has grown into one of the worl…

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