Despite the high light efficacy of HB LEDs (high-brightness light-emitting diodes), their cost for commodity applications is still too high for them to compete head-on with older forms of lighting, ...

Normally only visible much closer to the north pole, the Northern Lights have been seen as far south as New Mexico in recent ...

In their efforts to go green, town officials applied a solar light system this summer, hoping to be able to light up the American flag at the senior center. Yesterday, officials learned that they will ...

Each solar light is left hanging in our test garden over multiple winters to reveal which ones last, and more importantly which ones don't. Deep freeze As if the great British winter isn’t bad enough, ...

Solar panels... You see them all around Nevada, whether on rooftops or hillsides. But perhaps you haven't seen solar-powered street lights. A Tampa, Florida-based ...

Auroras aren't over: the sun's decline brings more storms, and a 'last gasp' finale could light up skies in the next 2 years.