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Enlarge / When the yarn is stretched, the LED lights up. (credit: AAAS/Science) Spare energy is all around us, from the pressure exerted by every footfall to the heat given off by heavy machinery. In some cases, like regenerative braking in cars, it’s easy to harvest, and the equipment needed to do so is simple […]
Enlarge (credit: NASA) Back in 2012, I had the pleasure of visiting the IBM Watson research center. Among the people I talked with was George Tulevski, who was working on developing carbon nanotubes as a possible replacement for silicon in some critical parts of transistors. IBM likes to think about developing technology with about a […]
