Humans might not be the first lifeforms to face self-induced climate change. A new model suggests Mars was once habitable enough to support microbes, and they may have wiped themselves out by causing irreparable damage to the Red Planet’s atmosphere.
Early in its history, the red planet likely would have been habitable to methanogens, microbes that make a living in extreme habitats on Earth, according to a study that simulated the conditions on a young Mars.
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