January 26, 2006Researchers at UCLA and University of Bologna develop a nano-size vehicle that can inch its way forward on sunlight.TAGS:electron, ring, motor, researcher, sunlight, vehicle
May 5, 2006Start-ups focus on an old technique of concentrating sunlight to make more cost-efficient photovoltaic panels. Photos: Solar 'concentrators'TAGS:hologram, cell, silicon, electricity, sunlight, photovoltaics, CEO