Science and technology

Associated Press
This product image provided by Philips shows a state-of-the-art LED light bulb. The bulb is the most energy-efficient yet, lasts about 20 years and is supposed to give off a pleasing, natural-looking light. But what separates it from the pack most is the price tag: $60. (AP Photo/Philips)

View gallery

500 photos

Astronomy, meteorology, environment, archaeology, electronics, computers and gadgets

View Comments