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- Teens take home science gold: A low-cost, self-driving vehicle; battery alternatives and analyses of galaxy clusters claim top prizes at a global high school science competition
- Flagging loose bolts: “Smart alert washer” automatically flags when a nut is coming loose, warning of potential danger
- Pee is for power: The water in urine can be a source of hydrogen for electrical generators
Downward and lateral force on a block may cause upward movement of atoms (right-hand box) that unzips weak bonds and permits sliding.
Credit: Gerde et al./Nature.
Found in: Physics
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