有那么一两秒钟，这位坎特维尔的幽灵僵在那里，气得七窍生烟!然后他一下子把油瓶碰倒在地板上，急匆匆地走了。他身体上发出奇怪的绿色光芒，接着他发出一声长长的、可怕的怪叫，响彻了整个宅邸。但就在他上到楼梯顶上的时候，有扇门打开了，出现了两个小人影，一个硕大 ...

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.