"This Britannica Guide to Climate Change gives a clear overview of the scientific evidence, from data showing how the atmosphere has changed in the last 4.5 billion to more recent studies on the symptoms of change from a warming planet and the global effects of greenhouse gases, deforestation and pollution. The guide introduces you to the possible solutions and to key figures in the debate, from the origins of environmentalism through to the Kyoto Protocol and beyond."--BOOK JACKET.