Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.

XI'AN, Jan. 27 (Xinhua) -- The Emperor Qinshihuang's Mausoleum Site Museum, home to the renowned Terracotta Warriors located in northwest China's Shaanxi Province, will extend their opening hours and ...

"How can the stream be so clear? - It is because of the fresh water from its source (问渠那得清如许，为有源头活水来)." The documentary about ...