If you end up with spare time this summer, or you need a book for an airplane ride, the National Academies Press has published three books of interest to the Bio-Link community. The paperback copies of the books are between 40 and $100, but the PDFs are free. I like to download the PDFs and read them on my iPad in apps like iBooks or iAnnotate, so I can highlight passages and find them later.
Even better, if you make an account at the National Academies Press bookstore, you get to log in to MyNAP (I wonder who came up with that name). Luckily, these books won't put you to sleep.