electrical circuits

(Newser) - Crowds may soon be kicking up clean energy in England. Designed to generate power from footsteps, "heel strike" generators are ready to be installed in shopping malls and subways—and power thousands of light bulbs. "It works by using the pressure of feet on the floor to compress...

(Newser) - Venture capitalists are swarming around firms developing LED (light-emitting diode) and similar lighting technologies beyond their current applications in calculators and cell phones, the San Jose Mercury News reports. Investors see new sources, using one-sixth of the power of incandescent bulbs, as environmentally friendly replacements for indoor and outdoor lighting.