Donald Bell has spent more than five years as a CNET senior editor, reviewing everything from MP3 players to the first three generations of the Apple iPad. He currently devotes his time to producing ...

(Phys.org) —The solar lamp developed by the start-up LEDsafari is a more effective, safer, and less expensive form of illumination than the traditional oil lamp currently used by more than one billion ...

For several years manufacturers have been introducing LED bulbs onto the market with the eventual goal of replacing incandescent and CFL lamps. The design of these lamps has evolved from very simple ...