NASA helped invent cordless power tools. Why? Why would NASA be interested in home improvement? Well, they weren’t. What they wanted was a way for their astronauts to dig on the surface of the moon. For science and stuff. Back in those days power tools needed a lot more energy and no one had figured out how to make batteries big or efficient enough. But NASA wanted its moon dust, and by george it was goingt to get it. They teamed up with Black & Decker and soon had a battery that worked. Not only did it make tools safer and smaller, they paved the way for other battery-based tech, like ipods and cell phones.