PPL and others are brightening up north Bethlehem. Volunteers were out Thursday installing dusk-to-dawn LED light bulbs at homes near Thomas Jefferson and William Penn elementary schools.

your only alternative was a compact fluorescent bulb, which has several drawbacks compared with light-emitting diodes. DETAILS: Osram Sylvania is shipping the first batches of its Ultra LED bulb ...

NEW YORK (AP) -- The first LED bulbs that are about ... production of regular 100-watt bulbs at the start of the year because they're energy-inefficient. Using light-emitting diodes, the new ...

GE Lighting has announced that it is getting in on the 100 W-equivalent LED replacement act. The 27 W Energy Smart LED bulb joins its range of incandescent bulb replacements that already includes ...

But if you buy a pair, it's critical to understand that more LEDs do not equal better light. In fact, the good LED bulb replacements actually have fewer diodes. (Just to be clear, we're talking ...

That's where Cree's newest LED light bulb comes in. At an asking price of $11 per bulb, it's a 100W replacement floodlight that puts out 1,500 lumens, which is just about as bright as BR30-shaped ...

Dear EarthTalk: Are there health or environmental concerns with LED lightbulbs, which may soon replace compact fluorescents as the green-friendly light bulb of choice?—Mari-Louise, via e-mail ...

Technical breakthroughs in the 90s allowed the manufacture of chips that produce white light. LED bulbs equivalent to 60-watt bulbs have been available for a few years and now cost around $25 each.