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    Make Mars Great Again

    by Christopher P. McKay Dec 15, 2016 4 minutes

    Mars is currently inhabited by an estimated 1 million microbes. They coat the surfaces and crowd the innards of our robotic landers and rovers, which international policy requires to be cleaned, but not fully sterilized. The bugs are dormant, but viable. If Mars warmed up and water began to flow again, these microorganisms would revive and reproduce. And it is within our power to make that happen.

    The concept of terraforming—making a barren world suitable for widespread life—is well developed in science fiction. The term was first used in a science-fiction story published in 1942. It implies the creation of a copy of Earth, which need not be the goal, but the word caught on. (It is definitely more euphonious than, , and centered on the science and ethics of terraforming. But terraforming is no longer just science fiction.

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