David Grinspoon Quote

Now, traveling about twice as far back again in Earth time, back to 542 million years ago, we encounter another sudden massive wave of extinction instigated by runaway biology: The Cambrian substrate revolution, when the texture and chemistry of the seafloor (at that time, the entire habitable surface of the planet) was rapidly remade by a spurt of biological innovation that caused both mass death and fantastic new evolutionary opportunity. This

David Grinspoon

Now, traveling about twice as far back again in Earth time, back to 542 million years ago, we encounter another sudden massive wave of extinction instigated by runaway biology: The Cambrian substrate revolution, when the texture and chemistry of the seafloor (at that time, the entire habitable surface of the planet) was rapidly remade by a spurt of biological innovation that caused both mass death and fantastic new evolutionary opportunity. This

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About David Grinspoon

David H. Grinspoon (born 1959) is an American astrobiologist. He is the Senior Scientist for Astrobiology Strategy at NASA and was the former inaugural Baruch S. Blumberg NASA/Library of Congress Chair in Astrobiology for 2012–2013.
His research focuses on comparative planetology, with a focus on climate evolution on Earth-like planets and implications for habitability. He has also studied, written and lectured on the human influence on Earth, as seen in cosmic perspective.
He has published four books, Venus Revealed, which was a finalist for the Los Angeles Times book prize, Lonely Planets: The Natural Philosophy of Alien Life, which won the 2004 PEN literary award for nonfiction, Earth in Human Hands, which was named one of NPR's Science Friday "Best Science Books of 2016" and Chasing New Horizons: Inside the Epic First Mission to Pluto, co-authored with Alan Stern. He is adjunct professor of Astrophysical and Planetary Science at the University of Colorado, a former Fellow of the Institute for Cross-Disciplinary Engagement at Dartmouth College and a former Distinguished Visiting Scholar in the College of the Environment at Wesleyan University.