视频简介
Written by the director himself, the story revolves around an “absent” hero: an astronaut lost in the emptiness of space. His absence is spoken about indirectly here, from planet Earth. He was the nation’s son, loved and admired by all. But he’s primarily always on the mind of his little sister Elsa, who’s the real “fully present” heroine in this story. Elsa has lived her life ...。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 ...。
