Light-emitting diodes make for bright and long-lasting light sources, but they’re not used for general illumination because they don’t easily provide bright white light. That may start to change with the 12-watt EnduraLED, a replacement for a 60-watt incandescent bulb. It uses a phosphor film placed a short distance from a high-efficiency array of blue LEDs : the film glows yellow, and the combination yields white light. The LED draws less power than an incandescent and lasts a full 25,000 hours. But the price tag–$60–may leave many people reluctant to change their light bulbs.
Product: 12-watt EnduraLED
Cost: Around $60
Availability: Late 2010
Other products in this section:
We could still prevent 1.5 ˚C of warming—but we almost certainly won’t
New research finds we’d need to immediately stop building fossil-fuel-burning vehicles, planes, and factories.
We are starting to wreck the environment around our planet now, too
Our species’ environmental impact extends far beyond Earth. Now one scientist says it’s high time we thought more carefully about what we’re doing to near-Earth space.
The day I tasted climate change
Every one of us will have a moment when global warming gets personal.