Why does Fermilab need accelerators?

At the center of all leading particle physics labs are the particle accelerators that make the research possible. But just why are particle accelerators necessary? What do they do? In this video, Fermilab’s Dr. Don explains it all. Quark Gluon Plasma: https://www.youtube.com/watch?v=Rk9KZLaVItI Fermilab physics 101: https://www.fnal.gov/pub/science/particle-physics-101/index.html Fermilab home page: https://fnal.gov