This week physicists announced the discovery of the long-sought-after Higgs boson — or at least something that looks a lot like it. Theoretical physicist Sean Carroll explains why the tiny particle is so fundamental to our understanding of the universe, and why it took 50 years to find it.
Segment Guests
Sean Carroll
Dr. Sean Carroll is the author of The Biggest Ideas in the Universe: Space, Time, and Motion, and is the Homewood Professor of Natural Philosophy at Johns Hopkins University in Baltimore, Maryland.