Lives of a Cell: Notes of a Biology Watcher by Lewis Thomas is an amazingly interesting book specifically in the subject of biology. There is also a sequel entitled The Medusa and The Snail, however, I have yet to read it, so I can’t speak to it’s quality.

Good Germs, Bad Germs by Sachs was an interesting read focusing on molecular and cellular biology, particularly the role of antibiotics and the development of superbugs.

Many books edited by John Brockman are lively discussions, quick reads, and though provokers. His books also include contributions from a wide range of leading minds in the science world, spanning several fields of science, math, technology, and psychology.

Physics books that are excellent include The God Particle and I Am a Strange Loop, although the latter might be categorized as more psychology than physics. It’s typically shelved with the physics or general science books in book stores and libraries.

Hope the recommendations help! Hopefully you’ll find some more interesting details about biology outside of the classroom. If none of these books do anything for you, don’t forget to ask your teacher or professor for recommendations, as well as librarians.