What does the NAS do? Host Carolyn Porco, NAS Dir. Marcia McNutt, and Maeve Higgins explore how the NAS advises our government on fracking, gene splicing, self-driving cars, contacting aliens, and more. Plus, reflections on the Deepwater Horizon oil spill.
Planetary scientist Dr. David Grinspoon answers questions about the human impact on Earth during the Anthropocene Era. Now updated with 13 minutes of Dr. FunkySpoon and Chuck Nice discussing why we must evolve from Homo Sapiens into Terra Sapiens.
