"Two hundred fifty million years ago, at the end of the Permian period, volcanoes in what is now Siberia erupted for about two hundred thousand years, producing layer after layer of lava; the deposits are called the Siberian Traps. The sulfur dioxide from these eruptions caused acid rain, and the carbon dioxide caused global warming, extensive enough to have at least initiated the greatest mass extinction in Earth's history: the Permian extinction wiped out about 95 percent of species. Biodiversity recovered after this event, but the recovery took almost one hundred million years."
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Life of Earth
Life of Earth: Portrait of a Beautiful, Middle-aged Stressed-out World is a 2011 book by Stanley A. Rice, professor of biological sciences at Southeastern Oklahoma State University. The book discusses the evolution of Earth's diversity in terms of symbiosis, sexual selection and altruism. It was dedicated to Lynn Margulis.
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