一个来自加纳北部的14岁女孩被环境推入阿克拉,春暖她必须忍受阿克拉贫民窟的生活,并找到回家的路。
一个来自加纳北部的14岁女孩被环境推入阿克拉,春暖她必须忍受阿克拉贫民窟的生活,并找到回家的路。
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回复 :NOVA: Mysteries of Sleep Like virtually every other animal, humans need sleep to survive. But why? What do we gain from spending nearly a third of our lives in such a defenseless state? And what's at stake if we sleep poorly? The functions of sleep have long been something of a mystery. But now scientists are peering deep into the brain to see what happens while we snooze. One study reveals that well-timed bursts of pink noise can nudge a person's brain waves, extending periods of slow-wave, or deep, sleep. And toddlers learning new words show that taking even a short nap after learning something new can help the information stick. And when it comes to sleeping poorly, it may turn out that having interrupted sleep can be just as harmful as missing sleep altogether. As scientists come to understand the powerful role that sleep -- or lack of it -- plays in everything from memory to trauma to emotion regulation, one thing is clear: This biological function is as crucial as it is complex.
回复 :赤膊上阵的伯特一如既往的坦荡,他畅谈排泄、被孩子们欺负以及全家密室逃脱之旅的劲爆收场。