How do you take something as sprawling and all-encompassing as the environment around us and make it one of the primary players in fiction? These fascinating and compelling novels show us how it's done. What's more, they fulfill the basic premise of fiction, which is to make the story universal, to drive home the impact and maybe shed light on something we might not have heard about before. Just in time for Earth Day, these dramatic novels will doubtless give you plenty of fuel for discussion as we face the daunting challenge ahead of us.