When Life Nearly Died The Greatest Mass Extinction of All Time [Paperback]

Today it is common knowledge that the dinosaurs were wiped out by a meteorite impact 65 million years ago that killed half of all species then living. It is far less widely understood that a much greater catastrophe took place at the end of the Permian period 251 million years ago: at least ninety percent of life on earth was destroyed.The focus is the most severe mass extinction known in earths history. The science on which the book is based is up-to-date, thorough, and balanced. Highly recommended.