Every week seems to throw up a new discovery, shaking the foundations of what we know. But are there questions we will never be able to answer—mysteries that lie beyond the predictive powers of science? In this captivating exploration of our most tantalizing unknowns, Marcus du Sautoy invites us to consider the problems in cosmology, quantum physics, mathematics, and neuroscience that continue to bedevil scientists and creative thinkers who are at the forefront of their fields. “The book reviews some of the great puzzles challenging science in chaos theory, quantum mechanics, cosmology, the nature of time, the origins of human consciousness and the limits of the universe… An absorbing entry into the genre of ‘what science hasn’t figured out yet’” -Forbes “An engaging, personal, and highly user-friendly voyage into some of the great mysteries and wonders of our world." -Alan Lightman, author of Einstein’s Dream and The Accidental Universe “Du Sautoy makes a lucid and beguiling companion as he guides us along the byways of contemporary science.” -The Guardian