The discovery that life can exist on Earth in conditions previously thought impossible has raised hopes that it could exist elsewhere in the Universe. Above, the Minerva Terrace hot springs in Yellowstone National Park, from Life Beyond Earth by Timothy Ferris (Simon & Schuster, $40).
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Life at the extremes. Nature 411, 994 (2001). https://doi.org/10.1038/35082645
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DOI: https://doi.org/10.1038/35082645