Hypothesis formed on evolution of archaea

U.S. scientists say they've found evidence microorganisms called archaea may have evolved from a moderate temperature environment.

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<p><a href="http://www.physorg.com/news68958298.html">Hypothesis formed on evolution of archaea</a></p> <p>U.S. scientists say they've found evidence microorganisms called archaea may have evolved from a moderate temperature environment. </p>