As we learn more about life in extreme conditions on earth, scientists are beginning to realize that we might be looking for the wrong signs on other planets…

Two NASA space probes that visited Mars 30 years ago may have stumbled upon alien microbes on the Red Planet and inadvertently killed them, a scientist theorizes in a paper released Sunday.

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  • You’d think we would have learned from our previous mistakes…

    Pilgrim and/or early Spanish Explorer: I really am sorry to hear that your whole village died of the smallpox, mr. native guy.

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