A company has invented a glowing light source that lasts for 15 years — instead of the 15 minutes for a typical glowstick. GlowPaint won the grand prize in NASA’s 2007 ‘Create the Future’ Design Contest with its Litroenergy™, a non-toxic, inexpensive micro particle that emits light — bright enough to read by — without any electricity or sun exposure.
“This has potential to save billions in energy costs worldwide,” says the company. It is durable and reliable too, they say: “The Litrospheres are not effected by heat or cold, and are 5,000-pound crush resistant. They can be injection molded or added to paint. The constant light gives off no U.V. rays, and can be designed to emit almost any color of light desired.” See more info here.