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A whiff from blue-green algae likely responsible for Earth's 
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Joined: Mon Aug 30, 2010 9:56 am
Posts: 20756
Post A whiff from blue-green algae likely responsible for Earth's
Science Daily Geology

Earth's oxygen-rich atmosphere emerged in whiffs from a kind of blue-green algae in shallow oceans around 2.5 billion years ago, according to new research.

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Sun Nov 22, 2015 8:37 am
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