2 星期前
视频简介
本片探讨了瓶装水行业在当今世界的作用，及其带来的对我们健康、气候变化、污染、石油依赖的一系列影响。。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 ...。
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