At the moment ds is getting through a book a day, things like Percy Jackson, the Alex Rider books, Artemis Fowl. I'm happy for him to read whatever he wants, I don't want to push him, but I can't keep up with the demand. I was thinking that something a bit more difficult might slow him down a bit but he's not necessarily going to be interested in books aimed at teenagers. Any ideas? It doesn't have to be fiction - he likes non-fiction too. Science, dinosaurs and history.