Physicists developed small devices that turn heat into sound and then into electricity. The technology holds promise for changing waste heat into electricity, harnessing solar energy and cooling ...

This may not fit in "other hardware", but this seemed to be the closest fit, so here it is. We got an outdoor heat pump with a heat strip/air handler installed at our house last year. It's working ...

HERE'S HOW IT WORKS: A palm-sized, cylinder-shaped resonator contains a stack of material with a large surface area such as metal or plastic plates, or fibers made of glass, cotton or steel wool. The ...