Here are my choices for this challenge:
1. The Triumph of Evolution and the Failure of Creationism by Niles Eldredge
2. How It Ends: From You to the Universe by Chris Empey
3. What's Eating You?: People and Parasites by Eugene Kaplan
I love to read non-fiction books like science books (since that is what I do, after all) but I find that they very easily crowd out the fiction books if I'm not careful. When I was younger I gravitated more towards fiction -- I think in part because reading non-fiction felt too much like schoolwork. But now I seem to crave them!