If recent research at Vanderbilt University bears fruit, we might not need light bulbs anymore.
Vanderbilt chemists have discovered a way to create white light with extremely tiny crystals. They say those "nanocrystals" could be used with light-emitting diodes, or LEDs, the devices often used to illuminate your alarm clock's digital display, your cell phone or your car's brake lights with what's known as solid-state lighting.