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.

SHENYANG, Jan. 24 (Xinhua) — Xi Jinping, general secretary of the Communist Party of China Central Committee, on Thursday afternoon inspected a steelmaker in Benxi City, northeast China's Liaoning ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

BEIJING, Jan. 17 (Xinhua) — Chinese President Xi Jinping on Thursday sent a congratulatory message to Zoran Milanovic on his reelection as Croatian president. In the message, Xi said that China and ...