'Listening To The Planets' To Understand Our Changing Climate | Video

Astrobiologist and author David Grinspoon has been a student of the planets his entire life. He grew up around and worked with science 'legends' Carl Sagan, Jim Pollack, Lynn Margulis and more. He talks to Space.com's @SteveSpaleta about what we can learn about Earth from studying our solar system’s planets.

credit : Space.com/images and visualizations: NASA/ESA/edited by @SteveSpaleta