The U.S. Department of Energy recently awarded $11.5 million to install light emitting diode lighting in parks, police stations, an airport runway, baseball fields and city buildings to promote energy ...

For decades, we’ve been guilt-tripped into turning off the lights any time we leave a room — but it turns out that “money-saving” habit might be a total bust. The U.S. Department of Energy has shed ...

We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › Outdoor illumination keeps the home visible at night and helps deter crime, but leaving ...

To combine two low-energy photons into one high-energy photon efficiently, the energy must be able to hop freely, but not too quickly, between randomly oriented molecules of a solid. The discovery ...