Thursday, March 23, 2006

 

Methane-making microbes appeared early on Earth

"Climate-changing microbes that produced methane may have appeared on Earth 700 million years earlier than previously thought - perhaps helping the world to keep warm while life took hold.

These 'methanogens' could have helped regulate the early Earth's climate by providing greenhouse gases, helping to prevent freezing conditions that would have stifled the fragile development of life on Earth."

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