'Andrew Dessler is that rare breed of scientist who can contribute at the leading edge of scientific discovery while adeptly explaining the science and its implications to lay audiences. With his newly revised edition of Introduction to Climate Change, Dessler provides a comprehensive, up-to-date and engaging account of the science, the impacts, and the policy dimensions of the climate crisis. Climate change is the defining challenge of our time and this textbook is the ideal choice to ensure students are informed about it.' Michael Mann, Penn State University, author of The New Climate War and Dire Predictions