Book excerpt: In Hatchet, 13-year-old Brian Robeson learned to survive alone in the Canadian wilderness, armed only with his hatchet. Finally, as millions of readers know, he was rescued at the end of the summer. But what if Brian hadn't been rescued? What if he had been left to face his deadliest enemy--winter? Gary Paulsen raises the stakes for survival in this riveting and inspiring story as one boy confronts the ultimate test and the ultimate adventure.