From the American Museum of Natural History in New York City, host Neil deGrasse Tyson returns, bringing together a rare mix of potentially clashing personalities - celebrities, comedians and the world’s leading scientific experts - to explore a variety of cosmic and science topics, in a way that television has never seen before.

Subjects up for discussion in this fourth season range from the science of basketball and performance enhancement, to animal and environmental ethics. Tyson’s guests for this new series include renowned broadcaster Katie Couric, actor Adrian Grenier, TV show host Stephen Colbert, controversial cyclist Lance Armstrong, Professor Stephen Hawking and astrophysicist Charles Liu.

Episodes: 20 x 60'