Did microbes cause mass extinction?
Washington (AFP) March 31, 2014 - Volcanoes and asteroids are sometimes blamed for wiping out nearly all life on Earth 252 million years ago, but US research Monday suggested a more small-time criminal: microbes. These microbes, known as Methanosarcina, bloomed in the ocean on a massive and sudden scale, spewing methane into the atmosphere and causing dramatic changes in the chemistry of the oceans and the Earth's climate, a ... more
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