Billions of years ago, microbes were key in developing modern nitrogen cycle

(PhysOrg.com) -- As the world marks the 200th anniversary of Charles Darwin's birth, there is much focus on evolution in animals and plants. But new research shows that for the countless billions of tiniest creatures - microbes - large-scale evolution was completed 2.5 billion years ago.

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<p><a href="http://www.physorg.com/news154275830.html">Billions of years ago, microbes were key in developing modern nitrogen cycle</a></p> <p>(PhysOrg.com) -- As the world marks the 200th anniversary of Charles Darwin's birth, there is much focus on evolution in animals and plants. But new research shows that for the countless billions of tiniest creatures - microbes - large-scale evolution was completed 2.5 billion years ago.</p>