NICE, France, 13 June (Xinhua) -- The 3rd United Nations Ocean Conference (UNOC3) concluded Friday in Nice, a coastal city in southern France, with the adoption of an intergovernmentally agreed ...

HEFEI, June 13 (Xinhua) -- Chinese researchers have achieved a major breakthrough in extending the lifespan of perovskite light-emitting diodes (LEDs), according to the University of Science and ...