The search-and-rescue effort has entered its final stage after a magnitude-6.8 earthquake struck Dingri County in southwest ...

A total of 646 aftershocks have been detected as of Wednesday noon after a 6.8-magnitude earthquake jolted Dingri County in ...

根据科普中国，在一项实验中，研究人员共选取了26名睡眠正常的健康成年人，分别让他们在睡觉时盖上两种不同重量的被子，一种是相当于体重12%的厚被子，另一种则是仅为体重2.4%的轻被子，接着观察他们的身体反应和睡眠变化。

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