How the Atomic Age Changed Metal Forever

Did nuclear testing accidentally change every piece of steel made after 1945?

In this fascinating Rabbit Hole short, Shea is joined by her brother Jason to explore one of the strangest scientific side effects of the atomic age. After the first nuclear bomb test, radioactive particles spread through the atmosphere and left a tiny signature in metals manufactured around the world. For most of us it doesn't matter. For physicists building some of the most sensitive detectors ever created, it became a major problem.

That challenge led scientists to an unexpected solution: pre-1945 steel recovered from old warships resting on the ocean floor. Along the way, Shea and Jason dive into nuclear fallout, low-background steel, underground copper production, deep-sea salvage, and the incredible lengths researchers go to in order to eliminate interference when searching for the rarest signals in the universe.

It's a story about science, history, unintended consequences, and why splitting the atom changed more than anyone realized.

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