Sometimes a book changes everything – how you understand the world, or what you want to do with your life. Science books can be particularly powerful. Norton / HarperCollins What other books can tell you where you came from, or how the universe works – and provide actual empirical evidence to back up their case? Which science book touched – or changed – your life? Maybe it was Richard Dawkins on evolution, or Michio Kaku on physics, or Dava Sobel on the solar system. NASA / YouTube / Via youtube.com Or something more human, like Guy Deutscher on language, or Rebecca Skloot's wonderful The Immortal Life of Henrietta Lacks. And how did it change things? Did it inspire you to follow a career in science? Did it simply make you see the world differently? Tell us about it! Write your response in the comment section below, and you could be featured in an upcoming BuzzFeed Community post.