<p>Technology's grip on us: The 4-1-1 on what's behind your selfie; an artist's computer simulation shows humans aren't as unique as we think; and how the invention of standardized time made America tick.</p>

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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. 