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Scientists: tiny algae triggered ancient mass extinction

Researchers have discovered what may be the Earth’s only mass cooling event, and it might have wiped out three-quarters of marine life on the planet. The mass extinction event has been linked to tiny algae, the team said.  The team, studying ancient ocean sediments discovered in Nevada, found that the algae population may have exploded during the Late Ordivician period. That in turn may have caused the atmosphere to cool rapidly, leading to a massive die-off of marine species, said Dr. Ann Pearson of Harvard University, one of the study’s co-authors.  Read more...
 

 

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