Infixion
I would recommend Climbing Mount Improbable by Richard Dawkins.You can also get a huge database from which to understand things from this website here.
Evolution -- Charles Darwin & A. R. Wallace
Another favorite of mine that has to do, not with evolution, but with the the scope of scientific understanding is located here.
http://explorepdx.com/feynman.html
Take the time to follow the hyperlinks and you will find a world of wonder and questions to explore. Let me know how you like them.
Dear Mrs Chown, Ignore your son's attempts to teach you physics. Physics isn't the most important thing. Love is.
Best wishes, Richard Feynman.