Oryx and Crake by Margaret Atwood. A fascinating look at a world with only one remaining human (the narrator), living amongst a genetically modified, perfectly created tribe of naïve humanoids who view him as a prophet. Atwood's vision of a world destroyed by climate change and human evil is intriguing from a scientific perspective and the narrator's survivalist skills and creativity are impressive. The world is also inhabited by hybridized animals and the genetic decisions and animal traits that were put into the altered humans are very cool amalgamations from the very best of the natural world. It includes ideas about the evolution of religion and superstition within a new species that are entirely plausible. Atwood obviously did her homework - as a scientist I loved reading her ideas, though I would not want to live in this world. A fabulous novel!
