The Sixth Extinction - by Elizabeth Kolbert
Eye opening read. Very insightful.
Abomination - by Gary Whitta
If you don't know of Whitta, he wrote the screenplay for The Book of Eli. This is his first novel. Paced like a movie. Very fun read.
Wonderful Life: The Burgess Shale and the Nature of History- by Stephen Jay Gould
Gould gets very detailed with his writing, but the content was extremely fascinating to me. The things we can learn from 500 million year old fossils. Amazing!