James McCann is the author of one of the most important agricultural and environmental histories of an African region (People of the Plow: An Agricultural History of Ethiopia, 1800–1990. Madison: University of Wisconsin Press, 1995). As such he is well placed to attempt a modern environmental history of the African continent. Overall, he has been successful. Green Land, Brown Land, Black Land is an extremely useful survey of recent trends in research into the causes and consequences of environmental change in Africa. As an introduction to the subject, McCann's book is probably unrivaled.