Scientists have found that weak nuclear force can be unified with electromagnetism. The forces that initiated our universe are being investigated with a Large Hadron Collider, which Dr. Brian Cox visits and explains for the viewers. The...

Part of a longer series, "In Search of Giants," this video covers the strong force that holds atoms together. A weak nuclear force can convert neutrons into protons and protons into neutrons, emitting electrons, positrons, or neutrinos...