Is consciousness merely an illusion, a by-product of our brain's workings, or is it, as the latest physics may suggest, the basis for all reality? Your perception of the world around you, your consciousness, should be the one thing you could talk about with absolute confidence. But nothing about consciousness is clear-cut and understanding it is perhaps the hardest problem facing modern science. But some extraordinary insights gathered by the latest research suggest that the answers are within our grasp. Building on the success of her bestselling book MAPPING THE MIND, Rita Carter gathers these insights together to throw new light on consciousness, its nature, its origins and its purpose.