Most people tend to think of science in one of two ways. It is a body of knowledge and understanding about the world: gravity, photosynthesis, evolution. Or it is the technology that has emerged from the fruits of that knowledge: vaccines, computers, cars. Science is both of these things, yet as Carl Sagan so memorably explained in The Demon-Haunted World, it is something else besides. It is a way of thinking, the best approach yet devised (if still an imperfect one) for discovering progressively better approximations of how things really are.
