Unless you are in the field, particle physics is not something that occurs to most people on a daily basis. One could argue that it has little relevance to their life, but in reality, it may be the most relevant science out there. There would be no life without particular interactions between particular particles that that hold us together. In essence, particle physicists ask the big question: “What are the building blocks that make up everything we can perceive (including us) and why do they behave the way that they do?”