David Grinspoon Quote
For the next several million years? Well, it might be, but there’s a hitch. Unfortunately, what Jacob’s results actually show is that Earth can be expected to be stabilized for all this time in an ice-free state. We’ve not only stopped the climate pendulum from swinging, but we’ve also got it pinned at one extreme end of its range. An ice-free Earth may in itself not sound horrible, unless you’re attached to the kind of planet we’ve always known and you are fond of penguins, polar bears, and the countless other species dependent on icy high-latitude environs. Yet we have no idea what this implies for the planet as a whole. How hot will the equatorial regions be in this new normal? What will happen to ocean circulation, sea level, precipitation patterns, and the rest of the biosphere? Nobody knows, but it is clear that this would be a drastically altered Earth. Yet,
For the next several million years? Well, it might be, but there’s a hitch. Unfortunately, what Jacob’s results actually show is that Earth can be expected to be stabilized for all this time in an ice-free state. We’ve not only stopped the climate pendulum from swinging, but we’ve also got it pinned at one extreme end of its range. An ice-free Earth may in itself not sound horrible, unless you’re attached to the kind of planet we’ve always known and you are fond of penguins, polar bears, and the countless other species dependent on icy high-latitude environs. Yet we have no idea what this implies for the planet as a whole. How hot will the equatorial regions be in this new normal? What will happen to ocean circulation, sea level, precipitation patterns, and the rest of the biosphere? Nobody knows, but it is clear that this would be a drastically altered Earth. Yet,
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About David Grinspoon
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.