Cool It: The Skeptical Environmentalist's Guide to Global Warming

Cool It: The Skeptical Environmentalist's Guide to Global Warming is a book by Danish statistician Bjørn Lomborg. It is a sequel to The Skeptical Environmentalist (first published in Danish in 1998), which in English translation brought the author to international attention. In Cool It, Lomborg argues his view that many negative impacts of climate change are overstated, and mitigation approaches are expensive and have poor return on investment; he instead proposes alternative solutions. The book was adapted into a 2010 documentary film of the same name.

Released amid a period of public debate over global warming, reception for the book was mixed. Howard Friel wrote a book-length response called The Lomborg Deception which challenges its veracity.