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.

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

红河 #梯田 #有一种叫云南的生活 In the Yuanyang Terraces, dance with the four seasons. Spring water is like a mirror, summer rice seedlings thrive, autumn ears turn golden, winter fog dances lightly, every frame is ...