After decades of hype, speculation, and multimillion-dollar laboratory research, the long-promised nanotechnology revolution is finally coming to a store near you. For proof, check out the transparent sunscreens, spillproof pants, and tennis rackets with extra pop now on sale.
Nanotechnology gets its name from the nanometer, a unit of measurement that is one billionth of a meter. A human hair is about 20,000 nanometers thick. Scientists say materials and devices manufactured at the nanoscale promise to change life as we know it.