The Environmental Protection Agency has estimated that if every U.S. household replaced one incandescent bulb with an Energy Star-labeled LED or compact fluorescent, it would save cost to $700 million in energy costs per year, but with so many bulbs on the market, what's a consumer to choose? NPR chats with Noah Horowitz, director of the Natural Resource Defense Council's Center for Energy Efficiency, about some of the most frequently asked questions when it comes to energy-efficient bulbs. Read More