Michael Creighton has a new book out called "Micro" that might be a fun read for y'all who are interested in survival stuff. The premise is that a small group of students have been shrunk to 1/2" tall by the evil CEO of a high tech robotics company, and have to survive in a Hawaiian rain forest while being hunted down by the evil CEO's muscle. He goes into some detail about nature/environmentalism, etc. in it. Fun stuff.