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Scientists have unearthed a
unknown species of microbes in the
beneath us. Researchers at Michigan State University have been exploring an
just below and above the Earth's surface called the Critical Zone. This zone is
to providing the conditions that sustain
. The researchers called the microbes CSP1-3. The microorganisms could be a key
of the process of purifying our water. Microbiologist James Tiedje said that while
of soil are responsible for much of the
of rainwater, CSP1-3 are also indispensable. He said: "CSP1-3 are the
cleaning up what got through the surface layer of soil." They have a
to do to purify our drinking water.