It's hard to imagine that life exists somewhere on the barren, dry, cold reaches of some place like Mars. It's even harder to look for any, on Mars at least. That's why many scientists have turned to studying the extremophile microbes that live in the most inhospitable places on Earth to discover what kind of off-the-wall, unpredictable survival techniques might be used to survive out in the wastes of Mars, or anywhere else for that matter. By studying extremophiles, researchers from Portland State University have discovered a particularly gritty kind of bacteria that survives by essentially eating iron.
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