人生的天与地

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春节将近，带着同村的几个兄弟在北京奋斗多年的包工头张国栋（陈刚 饰）正准备放下一年的辛劳，带着女友回家过年，但是一次小小的事故，让他结识了苦于无人装修新房的重点高中副校长白老师（冯丁洪 饰），于情于利，张国栋踊跃接下了白老师家的装修工作。另一面，内科主任医师李家梁（张彤 饰）也准备带家人回湖南老家为老父亲做寿，可不仅车票难求，一心想让儿子考上重点高中的妻子害怕耽误儿子学习，对回家一事坚决反对。张国栋的装修工程出了差错，着急用新家招待归国儿女的白老师急火攻心，进了李家梁所在医院，李妻得悉白老师身份，开始考虑如何为儿子拉上关系……一出回家探亲的戏剧在北京城里上演。。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 ...。