PNW scientists have made a flexible “fabric” that converts body heat into electricity. Heat is energy, and most of the heat we produce — from our bodies, kitchens and cars — just dissipates into the ...

When Bell Telephone Laboratories announced its silicon solar battery (TIME, May 3, 1954), it fired the imaginations of the science fictionists, and the solar system was soon abuzz with solar-powered ...

Finnish scientists sent electricity wirelessly using sound waves and lasers. "Acoustic wire" uses ultrasonic waves for contactless electricity transmission. Finland pioneers practical wireless ...