Fort Worth is converting to solar-powered streetlights, expecting to save $3 million annually in energy costs.

These lights charge during the day and automatically turn on at night to emit a warm glow. Amazon shoppers have rated this ...

Fonroche’s efficient, solar-powered lights will save the city approximately $3 million in annual energy costs Fonroche ...

A Chinese-led research team has generated powerful electron ... In March 1905, Einstein published a paper explaining the photoelectric effect. When light falls on specific material, electrons ...

In the dark days before solar technology, lighting up the backyard meant lots of tedious wire-running, all for a setup that ...