Study could lead to a new class of materials for making LEDs

Over the last decade, advances in the technology of light-emitting diodes, or LEDs, have helped to improve the performance of devices ranging from television and computer screens to flashlights. As the uses for LEDs expand, ...

Japan pledges 26% emissions cut by 2030

Japan, the world's sixth biggest greenhouse gas polluter, has pledged to cut emissions 26 percent from 2013 levels by 2030, a target observers judged inadequate to avert calamitous global warming.