This whole episode was dedicated to the planet mars. It gave a couple of description of the planet, one was from the novel The War of the Worlds, and the other was from the books Canals on Mars. It then described the viking projects and how they helped to discover a lot about the red planet. Then the episode ended by talking about tera-forming and possible colonization efforts.I thought the most interesting part of this episode was how in a hundred years we could have people who live on mars year round.