"Extremophiles" are strange
organisms that can live in shocking extremes of cold, heat, pressure, acidity
and more. Researchers discovered creatures that dwell in solid rock two miles
deep in the Earth and survive by "eating" the breakdown products of
radioactivity. Research on these organisms is redefining the limits of life on
Earth and forcing scientists to reconsider the probability of life on other
worlds.
You can learn more about these extreme
microbes in the National Science Foundation online Special Report, X-treme
Microbes.
Credit: Nicolle Rager Fuller, National
Science Foundation
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