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一种新品种的侵略性、贪婪的鲨鱼在北极研究站结冰的海面上出现，吞噬了所有坠落的人。当空间站沉入冰冷的水中时，那些活着的人该如何应对……。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...。