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David Grinspoon

David Grinspoon

Earth in Human Hands

For thinking about the future of life on Earth in planetary terms, no one can match the perspective of an astrobiologist.

David Grinspoon notes two major shifts in Earth’s biological regime: 1) 2.1 billion years ago, when cyanobacteria flipped the whole planet from anaerobic to oxygen-based life; 2) now, as humans assume domination of the Earth’s living systems. “We suddenly find ourselves running a planet,” he says, “without knowing how it should be done. We’re at the controls, but we’re not in control.” The cyanobacteria were unaware of their role. We are aware of ours. What should we do about that?

Grinspoon is professor of Astrophysical and Planetary Science at the University of Colorado and Senior Scientist at the Planetary Science Institute. His books include: Earth in Human Hands: Shaping Our Planet’s Future (02016); Lonely Planets (02004); and Venus Revealed (01998).

Stewart Brand's Summary will be posted after the Seminar takes place.

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SALT Summaries Book

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Condensed ideas about long-term thinking summarized by Stewart Brand
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Seminar Sponsors

Will and Margaret Hearst • David and Abby Rumsey • Kim Polese • Shel Kaphan • Garrett Gruener • Stream Guys Media Streaming • The Libra Foundation • Peter Baumann • Brian Eno • Greg Stikeleather • Richard and Angie Thieriot • Nion McEvoy • Cameo Wood • Susie Tompkins Buell Fund • Panta Rhea Foundation • Patrick Tufts • Ping Fu • Peter Schwartz • The Gordon and Betty Moore Foundation • Dean Ornish • The Baum Foundation • The Long Now Membership

We would also like to recognize George Cowan (01920 - 02012) for being the first to sponsor this series.