The Frontiers of KnowledgeFrom the bestselling philosopher, a gripping history of science, thought, life on earth and the human mind and what we might know in the future In very recent times humanity has learnt a vast amount about the universe, the past, and itself. But through our remarkable successes in acquiring knowledge we have learned how much we have yet to learn the science we have, for example, addresses just 5 per cent of the universe; pre history is still being