We have the good fortune of living in a universe with tacos. But why does the universe have tasty treats, people, stars and all sorts of matter, instead of nothing at all? In this episode of Even Bananas, Fermilab’s Kirsty Duffy and neutrino theorist Pedro Machado explain how understanding neutrinos is crucial to understanding our universe’s evolution. Grab your lunch, and let’s talk about breaking fundamental symmetries.