Behind every perfect nature-inspired design is a far more complicated story.

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In 1925, the world saw the birth of what just might be the greatest gadget in American History: the Brannock Device. The metal contraption transformed the way we measure feet forever, and more than a century after its invention…it has barely changed. Roman Mars and journalist Paul Lukas trace the life of the Brannock Device, from its role outfitting WWII sailors to its surprising endurance into the modern era, even as the entire world changed around it.

A History of the United States in 100 Objects is a production of 99% Invisible and BBC Studios.

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A simple cardboard box helped transform Finland into one of the best places in the world to raise a child.

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In the early 1970s, Bruce Lee made nunchaku (nunchucks) cool — kids were building their own and buying them in record numbers. But the nunchucks craze coincided with something much bigger: the birth of a radical new Asian American identity. Roman Mars and historian Jeff Chang trace how nunchucks went from ancient weapon to symbol of resistance — not only uniting Asian Americans in the fight for their own rights, but connecting them to every other group pushing back from the margins.

A History of the United States in 100 Objects is a production of 99% Invisible and BBC Studios.

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Neil MacGregor reflects on creating the landmark series that changed how people think about history. Then, revisit the Rosetta Stone, the artifact that unlocked ancient Egypt.

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In 1982, a twelve-year-old paperboy, Johnny Gosch, vanished from a quiet Iowa street and sparked an unlikely campaign: the faces of missing children printed on milk cartons by the billions. Roman Mars and Annie Brown trace how a regional dairy campaign exploded into a national symbol — and how the “stranger danger” fears it stoked shaped American misconceptions about child safety that still echo today.

A History of the United States in 100 Objects is a production of 99% Invisible and BBC Studios.

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A Louisiana man born into slavery designs an airship with hopes to take flight. Those plans are interrupted, but maybe not forever.

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In 1902, an American classic was born: the teddy bear. Named after President Theodore Roosevelt, the toy became a huge hit, and sparked an idea…maybe every president from then on should have their own viral stuffed animal. Jon Mooallem tells the story of the ill-fated billy possum, and how our fickle feelings about animals have shaped the history—and perhaps the future—of our relationship with the natural world.

A History of the United States in 100 Objects is a production of 99% Invisible and BBC Studios.

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