The evidence continues to mount: Climate change is for real! But what does it all really mean, and what can we do about it? In this concise, highly readable narrative, a leading environment scientist and educator takes a scrupulously balanced approach to explaining the history of global climate monitoring and change. Here are the whos, hows, whats, whens, wheres, and whys of the interaction between human activity and recent trends in the Earth's climate. -- from back cover.