What book or documentary helped you learn the most about science?

Lots of us are taught about science in the classroom, but that isn't always the best environment to learn. Sometimes, we learn more from watching a TV series about science, or reading a really engaging nonfiction book. What book or movie/TV documentary helped you really understand a scientific concept for the first time?

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Tell us something about what you learned, and also what it was about the nonfiction book or documentary that helped you understand it. Please include links, pictures, and video, so we can learn too!