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Early life on Earth may have developed more quickly than thought
Date:11/11/2009

early ocean, communities of green photosynthetic bacteria begin to grow on the pool floor. These communities become thicker as water temperature continues to drop off away from the pool centers.

"There is life even in the hottest water, and microbes there have evolved to grow in those harsh conditions. But there is even more life present in the cooler waters," he notes. "We think this is similar to what conditions might have been like billions of years ago."

Tice says the new findings could open doors for new ways to look at Earth's early history, especially life forms that existed billions of years ago.

"We know life was around that long ago, but these findings show that the very stressful conditions for life to exist may not have been as stressful as we had thought," he notes.

"It means more organisms may have been around that were not necessarily heat-loving ones. The findings could give us a better understanding of how life evolved and maybe give us some clues about the long-term history of Earth's climate and atmosphere."


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Contact: Mike Tice
tice@geo.tamu.edu
979-845-3138
Texas A&M University
Source:Eurekalert

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