Replace fluorescent and incandescent light bulbs with LED light fixtures. LED lights are known to be 50 percent more efficient than fluorescent lights and 90 percent more efficient than incandescent bulbs (Design Recycle Inc.). In the U.S., the lighting sector is currently 11 percent of residential energy consumption, which is 41 percent of the nation's total energy usage (The National Academies, 2008). Simply replacing every light bulb in American homes with an LED equivalent would cut the nation's energy consumption by approximately 4 percent. Then, considering that America uses 20 percent of the world's energy (The National Academies, 2008), installing these light bulbs alone would reduce the global usage by .8 percent, which is substantial considering this does not include the replacement of light bulbs in other industrialized countries. The feasibility of LED lighting is also promising because of the enormous gain in efficiency; in this case, people save money by becoming more efficient and can reap the profits long after the fixtures have paid for themselves.