Sidedoor

Smithsonian Institution
Sidedoor
Latest episode

237 episodes

  • Sidedoor

    Will the Real Uncle Sam Please Stand Up?

    1/07/2026 | 31 mins.
    He’s a symbol of patriotism, protest, and power. But behind the red, white, and blue is a real man—and a disputed American origin story. How did a real guy go from meatpacker to meme, to personification of a nation and, eventually, the most famous Army recruiter in history?
    I WANT YOU… to listen and find out.
    Guests: 
    Frank Blazich, curator of modern military history at the Smithsonian's National Musuem of American History
    Kathy Sheehan, executive director of the Hart Cluett Museum in Troy, New York; The Redela County and Troy City historian
  • Sidedoor

    A Very Cold Case

    12/24/2025 | 32 mins.
    American newspaper publisher and all-around eccentric, Charles Francis Hall, was an unlikely candidate to become an Arctic explorer. Nevertheless, he made three trips to the frozen north, until he died there under suspicious circumstances. Sharpen your powers of deduction and join us on Sidedoor for an epic frozen whodunit, featuring shipwreck, romance, and a social media darling with a dark secret. We’re resharing this longtime favorite from 2021 to bring you some wintry vibes. 
    Guests:
    Stephen Loring, anthropologist and archeologist at the Arctic Studies Center of the Smithsonian’s National Museum of Natural History
    Heidi Moses, volunteer with the Smithsonian Transcription Center
    Emily Niekrasz, social media manager, Smithsonian Institution
  • Sidedoor

    A Mold with a Grudge

    12/10/2025 | 39 mins.
    It started with a messy lab and a mysterious mold. But turning “mold juice” into the world’s first antibiotic would take a sick policeman, a market cantaloupe, and an extraordinary wartime collaboration between scientists, governments, and industry. This is the story of how penicillin changed the world.
    Guests:
    Kevin Brown, Trust Archivist to Imperial College Healthcare NHS Trust and curator of the Alexander Fleming Laboratory Museum at St. Mary’s Hospital; author of Penicillin Man: Alexander Fleming and the Antibiotic Revolution
    Diane Wendt, curator in the Division of Medicine and Science at the Smithsonian's National Museum of American History
  • Sidedoor

    The Secret of Lincoln's Watch

    11/26/2025 | 30 mins.
    A mystery hidden in time. Wrapped in gold. Stowed secretly in Lincoln's pocket. We dig into the family story of a secret message etched inside Abraham Lincoln's pocket watch. Is this a tall tale or a hidden piece of history waiting to be discovered? Join us as we dive into this incredible tale of family lore, historical detective work, and the Smithsonian's decision to open a priceless artifact.  
    Guests: 
    Lisa Kathleen Graddy, curator of American political history at the Smithsonian's National Museum of American History
    Harry Rubenstein, curator emeritus in the Division of Political History at the Smithsonian's National Museum of American History
    Doug Stiles, great-great-grandson of watchmaker Jonathan Dillon
  • Sidedoor

    It's Season 12!

    11/19/2025 | 1 mins.
    Sidedoor returns for its twelfth season on Wednesday, November 26th!

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About Sidedoor

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. Check out si.edu/sidedoor and follow @SidedoorPod for more info. 
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