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Scientists have discovered a previously
species of microbes. Researchers in the USA found them in an
below and above the Earth's
called the Critical Zone. This is
for sustaining life. The microbes have been called CSP1-3. They could be a
part of the process of water
. Dr James Tiedje said that while soil is responsible for much of the
of rainwater, CSP1-3 may also be indispensable. He said: "CSP1-3 are the
cleaning up what got through the surface
of soil." They have a
to do to purify our drinking water.
