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SIGNED! RARE! New Approaches to Speciation in the Fossil Record Douglas H. Erwin (editor), Robert Anstey (Editor) italy The United States of PizzaMost of us remember the basics from science classes about how Earth came to be the only known planet that sustains complex life. But what most people don't know is that the more thoroughly researchers investigate the history of our planet, the more astonishing the story of our existence becomes. The number and complexity of the astronomical, geological, chemical, and biological features recognized as essential to human existence have expanded