How does physics impact our free will? Neil deGrasse Tyson and comic Negin Farsad discuss quantum mechanics, parallel universes, and the theory of everything with theoretical physicist and author of The Biggest Ideas in the Universe, Sean Carroll.
What is string theory? On this episode, Neil deGrasse Tyson and comic co-host Jordan Klepper answer fan questions about solar system formation, dark matter, and the expansion of spacetime. What would travelling at the speed of light look like?