Like the Tacoma Narrows, Maine’s Deer Isle Bridge was designed long and thin and turned out to be dangerously unstable. Unlike the Tacoma Narrows, it’s still standing.
The use of electricity to restore life goes back as far as the 1780s. Not until after World War II, though, did doctors start applying it systematically to save heart attack victims.
To stop Hitler’s U-boat campaign, the Navy had to first invent a new kind of warship and then figure out how to mass-produce it—in places like Denver and Duluth
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