Arizona State University scientists are harnessing this unexpected trio of renewable energy sources to create innovative fuel cells. Researchers at ASU have invented a fuel cell containing a tiny hydrogen-gas generator which lasts five times longer than today’s conventional batteries to power laptops, cameras and small electronic devices. Another ASU invention - a microbial fuel cell - enables bacteria to generate electricity when feeding on human sewage and other wastes. These fuel cells convert abundant materials into clean, efficient power. ASU is developing new energy sources to ensure a sustainable future.