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.
BEIJING, Jan. 16 (Xinhua) — Chinese President Xi Jinping and Prince Albert II of Monaco on Thursday exchanged congratulatory messages to celebrate the 30th anniversary of the establishment of ...
BEIJING, Jan. 23 (Xinhua) -- China is willing to work with the United States to promote stable, healthy and sustainable economic and trade relations, based on the principles of mutual respect, ...