In the Origin of Species, Charles Darwin publicly set forth his theory that populations evolve over the course of generations through a process of natural selection. Species are not fixed, but vary and transform according to the law of the survival of the fittest. This was revolutionary: the idea of an almighty Creator crumbled, and with it any providential natural "plan." Victorian England grew vehementl impassioned, whether for or against. A scientific tale that sums up and explains Darwin's main theories as well as the impact of his ideas throughout the world.