Once there was a planet with green seas, methane skies, and life - it was here

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Once there was a planet with green seas, methane skies, and life - it was here

Fantastic article about the rise of the cyanobacteria and how they destroyed the ecosystem of an entire planet.

The period in history is known as the Paleoproterozoic era, and prior to that time the Earth's ecology and environment were significantly different.

The iron-rich waters of the oceans lent them a green tint, and the atmosphere was comprised of gasses other than oxygen.

Although oxygen atoms were abundant, such as those found in water molecules, unbound oxygen was extremely rare. The sea was host to a plethora of anaerobic microorganisms, but there were also a few members of a newly evolved variety: a blue-green algae known as cyanobacteria.

These adapted bacteria were the first to use water and sunlight for photosynthesis, producing oxygen as a by-product of their metabolism.

Read it here
 http://www.damninteresting....
By netchicken: posted on 11-8-2007








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