God created life on countless worlds. On earth, in hominids and men, he created circuits of neurons to give us more than a hundred instincts-far more instincts than any animal. Researching primitive life in the desert, two scientists find a huge and welcome cave. God sends them an urgent message inside the cave. In our brains, he created circuits of neurons to give us more than a hundred powerful instincts-far more than any animal. These instincts...