There is one non-fiction book that I could absolutely not put down once I started reading it, and it is called Sapiens: A Brief History of Humankind by Yuvan Noah Harari. It is a book that explores why exactly it is that humans became the dominant species on our planet and how our evolution has contributed to this. It is truly fascinating stuff and the author wrote it in such a manner that you never feel like you are reading some dry scientific paper, but instead exploring a complex mystery. Another one that shocked me was The Radium girls by Kate Moore. I actually saw the story about women who were paid to paint glow in the dark dials on watches on television and how they began to die due to their jobs. It was on one of those believe it or not shows, but after reading the book I found that it was even more horrifying than what I suspected. Obviously, it is also impossible to mention compelling non fiction without mentioning Stephen Hawking, who never ceased to blow my mind. My favorite book of his is Brief Answers To The Big Questions, which is filled with some awesome insights by him.