Shelf 2: Big Pictures

If you keep yourself up late at night wondering about truly big questions—you know, what lies beyond the edge of the universe, how much of who we are is inborn and how much is shaped by our environment, whether the phrase “too much cilantro” has any meaning—this is your reading list.  These are the books that have helped me think my way towards an always-evolving sense of the biggest pictures in science, history, and society.  Each book points the way to at least one of the shelves in at least one of the other cases.