我们天生喜欢香,极少喜欢臭。自然规律也显示:香料能使物品保存持久。这其实已经用气味指明了方向,所谓正道,就是千古流芳。于是在古人面前,很多不同类别的名词汇成了一种通感:芬芳、侠骨、馨香、大义、正气、至善、……古人相信,任何选择都会自带气味标签。但吊诡的是,在历史重要节点上那些意见截然相反的人,无不坚称自己都是正气使然。而作为后来人,我们也确实发现,随着深入了解双方,越来越难以评判。香,究竟是客观共识,还是辩证的转化?本片选取与五位古人命运相连的香料,串起他们曾经在那些重要节点上的冲突和选择。。The dream of sending humans to Mars is closer than ever before. In fact, many scientists think that the first person to set foot on the Red Planet is alive today. But where should the first explorers visit when they get there? Horizon has gathered the world's leading experts on Mars and asked them: where would they go, if they got the chance - and what would they need to surviv...。