The Skeptical Environmentalist: Measuring the Real State of the World (, literal translation: "The True State of the World") is a book by Danish environmentalist author Bjørn Lomborg, controversial for its claims that overpopulation, declining energy resources, deforestation, species loss, water shortages, certain aspects of global warming, and an assortment of other global environmental issues are unsupported by statistical analysis of the relevant data. It was first published in Danish in 1998, while the English edition was published as a work in environmental economics by Cambridge University Press in 2001.