We live in an age where engineering marvels are commonplace: airplanes crisscross the sky, skyscrapers grow like weeds, and spacecraft reach for the stars. But every so often, we see something ...

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This isn’t a gadget—and it’s even a couple of years old—but we think you’ll forgive this weekend foray into “Oh, wow!” engineering. This bit of concrete and steel is the Falkirk Wheel, a boat lift ...