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A 6,560-foot hole in Cornish granite came up with 158-degree water carrying 100 parts per million of lithium, and a well in the same rock pulls 340. So a small British company hired a Texas oilfield crew to sink two more holes and pump for three months
A 22-micrometer strip of nickel-titanium shortens on its own when a 266-degree plate warms it, and it yanks a second strip that snaps back 4 degrees colder than the room. The cooler built around the pair has no motor in it and moves 2.79 milliwatts
“Let me guess… Corvette?”: I saw Cars in theaters for its 20th anniversary, and I think every car enthusiast should do this
A 14-foot pipe drops water 800 feet down a California hillside in a single mile to spin two 18-foot wheels, and when it split in February it put 130 million gallons on that hillside at once. Seven months later nobody has touched the pipe