"Brilliant and fascinating. No one is better at making the recondite accessible and exciting." --Bill Bryson A captivating journey to the outer reaches of human knowledge Ever since the dawn of civilization we have been driven by a desire to know. But are there limits to human knowledge? Are some things beyond the predictive powers of science and the capacities of the human brain? Or are those challenges the next big discovery waiting to happen? In The Great Unknown, one of the world's most brilliant mathematicians takes us into the minds of science's greatest innovators as he probes the many mysteries we have yet to solve. From the very large to the very small, from the distant future to the deep past, from the complexities of the human brain to the infinities of mathematics, Marcus du Sautoy invites us to join him on a journey to the seven frontiers of knowledge, the outer edges where scientists are actively grappling with the unknown. Can we locate consciousness in the brain? What is dark energy made of? Can we speak of time before the Big Bang? Is it possible to predict the future? At once exhilarating and mind bending, The Great Unknown will challenge you to think in new ways about every aspect of the known world. Du Sautoy reminds us that major breakthroughs were often ridiculed at the time of their discovery and invites us to consider big questions--about who we are and the nature of God--that even the most creative scientists have yet to answer definitively.