Now that robot visitors have explored Mars, is it time for humans to contemplate visiting the faraway world? This "Nova" program takes on the challenging question, reviewing not only how to confront the particular dangers involved in such a long journey, but also how engineers, scientists, and chefs are working hard on evolving current technologies to make the trip a reality. Hosted by astrophysicist Neil deGrasse Tyson. 60 min. Widescreen (Enhanced); Soundtracks: English Dolby Digital stereo, DVS; Subtitles: English (SDH).