http://carlzimmer.com/books/parasiterex/index.html

I got Emery this book yesterday, worried that it was really over his head. I had heard Carl Zimmer on This American Life and he told a fascinating tale of parasites and their status as the most successful organisms on the planet. I thought Em would be interested in this but once I bought the book I wasn't sure I'd made a good choice. It was long and had no pictures and was not a book I felt I could read, let alone my 10-year-old.

I gave him the book after school and he began reading it immediately. He read the first third of it last night. Astonishing.