Is humanity doomed? Looking ahead, hopefully, with astrobiologist David Grinspoon

Provided by Grand Central PublishingScientist and author David Grinspoon will visit the Denver Museum of Nature & Science on Dec. 13 to promote his new book “Earth in Human Hands: Shaping Our Planet’s Future.”Nationally-renowned scientist, author and sometime-Colorado resident David Grinspoon — now senior scientist at the Planetary Science Institute in Washington, D.C. — is begging us to take the long view of humanity’s stewardship of Planet Eart