#403 – Lisa Randall: Dark Matter, Theoretical Physics, and Extinction Events

2474.016 - 2499.467 Lisa Randall

So the standard model of particle physics basically tells us about nature's most basic elements and their interactions. And so it's the substructure as far as we understand it. So if you look at atoms, we know they have nuclei and electrons. Nuclei have protons and neutrons in them. Protons and neutrons have particles called quarks that are held together by something called the strong force.