If we want to make lighting more efficient, perhaps we should start from the beginning: with the shape of the light bulb. Illumitex, a startup based in Austin, Texas, manufactures square LED bulbs ...

LED Chips, on the Cheap LED bulbs have long been lauded as an energy-efficient alternative to incandescent bulbs. But LED, or light-emitting diode, bulbs are expensive to produce, which has kept ...