Lowboy by John Wray.
I do love stories about the mentally ill-Lowboy is a 16 year old schizophrenic who has gone off his meds, and is convinced he has the answer to global warming. I enjoyed this book quite a bit, it had a plot twist I should have seen coming, and it made me sad in the end.
What more could you ask for?
Side note-I just read the New York Times review of this book, and if I hadn't read the book already, I'd be kind of mad. I don't like to give away too many details in my reviews, it kind of spoils it. But maybe that's just me. Maybe I've been doing this wrong THE WHOLE TIME. But, it is my blog and I can do what I want. So up yours NYT!!