David Grinspoon: Childhood's End: What Kind of Planet Changers Do We Want to Be?

#030: NASA astrobiologist and author David Grinspoon views humanity in deep time, with plenty of sympathy for our role as caretakers without a set of instructions. He wonders whether we can develop enough self-awareness to see ourselves as a geological force capable of stopping the 6th Mass Extinction we're heading towards?David Grinspoon is an astrobiologist and senior scientist at the Planetary Science Institute. He is an adjunct professor of Astrophysical and Planetary Science at the Unive...