About the Author

Marcus Weeks is the author of the '...In Minutes' series, published by Quercus. He is also the author of How Many Molehills in a Mountain?: Measuring What You Don't Know in Terms of What You Do and Music: A Crash Course, and has contributed to many titles for Dorling Kindersley, including The Philosophy Book, the Millennium Encyclopedia, and both Science and Art in 'The Definitive Visual Guide' series.