Lighting

http://spectrum.ieee.org/semiconductors/optoelectronics/led-lighting-blue-yellow-white


http://spectrum.ieee.org/semiconductors/optoelectronics/the-lightbulb-that-really-is-a-better-idea

http://spectrum.ieee.org/slideshow/energy/environment/leaving-the-lights-on 


http://spectrum.ieee.org/energy/policy/last-hurrah-for-banned-bulbs/bulbsb01

http://spectrum.ieee.org/semiconductors/optoelectronics/the-lightbulb-that-really-is-a-better-idea