AdrianBryan Did you know that 5% of worldwide greenhouse gas emissions are created by electricity for lighting? The work of three physics laureates is making a positive difference. Isamu Akasaki, Hiroshi Amano and Shuji Nakamura invented efficient blue light-emitting diodes which has enabled bright and energy-saving white LED bulbs, which illuminate everything from Christmas trees to football stadiums. LED light sources have the least environmental impact. They use at least 75% less energy and last around 25 times longer than incandescent bulbs, but they are not used everywhere. - The Noble Prize
