Rubicon, the fifth dimension of biology is a revolutionary new theory that will change your understanding all life on Earth, over 4000 million years of evolution. What happens in our brain when we get an inspired idea, feel sexy, or go to sleep? How is it that people can carry a virus such as AIDS, or a bacterium such as TB, and yet not be ill? Why do bees buzz? What happens when a sperm fertilises and egg, or a seed starts to grow into a plant or tree? How does a heartbeat occur once a second? What was the threshold crossed that led to the demise of the dinosaurs, and most of life, some 80 million years ago?