It was Einstein's famous unfinished project - to find one law that unites all of physics, and explain everything in the universe. It's still an unfinished project, and today hundreds of physicists from CERN to NASA to the Ivory Towers around the world are struggling to find this holy grail of science. Is there one theory, one equation that governs every single event in our universe? An overarching structure to reality? This episode of THROUGH THE WORMHOLE attempts to journey into an understanding what the universe is made of, and how we got here.