First detailed report defines limits of methane-exhaling microbial life in an undersea volcano

By some estimates, a third of the Earth's organisms by mass live in our planet's rocks and sediments, yet their lives and ecology are almost a complete mystery. This week, microbiologist James Holden at the University of Massachusetts Amherst and others report in Proceedings of the National Academy of Sciences the first detailed data about a group of methane-exhaling microbes that live deep in the cracks of hot undersea volcanoes.

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