Precambrian cratons -- some of Earth's oldest rocks -- were uninhabitable for microbes for much of their existence, with the longest period of habitability not much beyond a billion years, and many only for the past 50 million to 300 million years, according to a paper correlating Earth's deep biosphere with geologic history.
from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/11/211102111213.htm
from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/11/211102111213.htm
A life less obvious: Study sheds light on the evolution of underground microbes
![A life less obvious: Study sheds light on the evolution of underground microbes]()
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November 02, 2021
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