MNN Galleries

11 clean tech innovations that can change the world

Clean tech innovations: Mercury-free, energy-efficient lighting

Photo: RTI International

5 of 13

Mercury-free, energy-efficient lighting

RTI International researchers have invented breakthrough lighting technology that is five times more energy efficient than incandescent bulbs and does not contain mercury, making it more eco-friendly than CFLs. Best yet, the lighting gives off a warmer, more aesthetic light than CFLs. Once the bulbs hit the market, consumers will have no good excuse left to use traditional incandescents.