一段名为Oiia Oiia Cat的迷因（memes）正在全世界爆红，这是一只在绿色背景上“旋转”的猫。它有着平静、无所谓的表情以及胖胖的身体和短短的四肢，与高速的旋转动作形成了鲜明对比。

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.

引言数月前，笔者曾写过一篇关于“巴黎奖牌”的科普文章，讲述铁矿石被用于修筑宏伟的巴黎铁塔，而铁塔的更换材料又被回收嵌于奖牌，见证人类的发展。文章引发了许多讨论，其中有一条评论引人深思：“埃菲尔铁塔的每一个零件都被更换过，那它还是原来的埃菲尔铁塔吗？” ...

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.

据韩国媒体1月28日报道，已故韩国气象女主播吴安娜的加害者推测者实名公开，金佳英被波及。

The existence of the Hsia, traditionally regarded as the first of China’s three great founding dynasties and one of the chief progenitors of Chinese civilization, has not only long been questioned but ...