Early this month, researchers at CERN, the European Organization for Nuclear Research, announced that they found convincing evidence of a new particle called the Higgs boson. Sometimes called the “god particle,” the Higgs boson gives mass to the elementary particles that make up the universe. Brian Greene, Professor of Mathematics and Physics and author of The Elegant Universe, The Fabric of the Cosmos, and The Hidden Reality, and Kyle Cranmer, Assistant Professor of Physics at New York University, help us decipher what the Higgs is and why it matters, and explain how the Large Hadron Collider works.