In 1964, physicist Peter Higgs predicted the existence of the Higgs boson, a particle that would confer mass on other particles. Today, scientists at the Large Hadron Collider at CERN may be on the brink of finding the Higgs. In this clip from "The Fabric of the Cosmos," learn about Higgs' theory and hear from Peter Higgs himself.

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To learn more about the Higgs boson, visit http://www.pbs.org/wgbh/nova/physics/