Prepare to flick off your incandescent bulbs for good under new US rules that kicked in this week

FILE - Manager Nick Reynoza holds a 100-watt incandescent light bulb at Royal Lighting in Los Angeles, Jan. 21, 2011. New federal rules governing the energy efficiency of lighting systems went into full effect Tuesday, effectively ending the sale and manufacture of bulbs that trace their origin to an 1880 Thomas Edison patent. (AP Photo/Jae C. Hong, File)