SciShow on Instagram: "Sometimes, being an expert in one scientific field doesn’t translate to another. But then there’s Luis Alvarez, a particle physicist who helped expand our knowledge of the world by investigating everything from atomic bombs, to Egyptian pyramids, to what actually killed the dinosaurs. This video was inspired by Collisions: A Physicist’s Journey from Hiroshima to the Death of the Dinosaurs, a new book by Alec Nevala-Lee. If you’d like to check it out, head to the SciShow Bo