25 年前
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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 ...。2017年，西班牙遭遇了两场由本国年轻人发动的恐怖袭击。为何会发生这样的事？本剧集对此展开了深度探讨。。
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