宏大构想：我们要去火星吗？

TheattempttosendandlandastronautsonMarsrisksbillionsofdollarsandthelivesofthosebraveenoughtoattemptit.Isthepossiblebenefitreallyworththerisk?Andisitreallyachievable?
　　GuidingusthroughthisethicalandscientificminefieldisDrKevinFong.Kevin'sdiversebackgroundinastrophysics,aeronauticsandmedicinemakeshimuniquelyplacedtounders...