BEIJING, March 14, 2018 (Xinhua) — File photo taken on April 16, 2013 shows British physicist Stephen Hawking attending an activity at California Institute of Technology, the United States. Renowned British physicist Stephen Hawking has died at age 76, a family spokesman said on March 14, 2018. The professor died peacefully in his sleep at his home in Cambridge, the spokesman said. (Xinhua/Yang Lei/IANS)