Little Atoms 222 – Road Trip 07 – Sean Carroll

In this episode, Neil visits the California Institute of Technology in Pasadena, and talks to theoretical physicist Sean Carroll. Sean Carroll has written papers on Dark Energy, Dark Matter, the physics of extra dimensions and alternative theories of gravity. He is also one of the founders of the group blog cosmicvariance, named one of the five top science blogs by Nature. Sean is the author of From Eternity to Here: The Quest for the Ultimate Theory of Time.