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Mars: Making the New Earth

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Mars: Making the New Earth
The notion of bringing Mars to life -- transforming a cold, dry, uninhabitable desert into a living planet -- called terraforming, has been around for almost a century. Initially just a science fiction concept, it has become a subject of serious scientific investigation. NASA astrobiologist Dr. Chris McKay has spent 30 years researching extreme environments to understand the potential of such planetary engineering.

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