Global warming led to atmospheric hydrogen sulfide and permian extinction

Volcanic eruptions in Siberia 251 million years ago may have started a cascade of events leading to high hydrogen sulfide levels in the oceans and atmosphere and precipitating the largest mass extinction in Earth’s history, according to a Penn State geoscientist.

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<p><a href="http://www.physorg.com/news3130.html">Global warming led to atmospheric hydrogen sulfide and permian extinction</a></p> <p>Volcanic eruptions in Siberia 251 million years ago may have started a cascade of events leading to high hydrogen sulfide levels in the oceans and atmosphere and precipitating the largest mass extinction in Earth’s history, according to a Penn State geoscientist. <br></p>