"In a carefully researched and insightful book, Steven Koonin highlights the significant uncertainty underlying climate models and statistics, the limits of technical and political responses, and the need to reassert the core values of scientific independence and integrity that drive social progress." --William van Wijngaarden, The Journal of the Witherspoon Institute and professor of physics at York University "The most important book on climate science in decades." --Rupert Darwall, RealClearPolitics "The book is no polemic. It''s a plea for understanding how scientists extract clarity from complexity. And, as Mr. Koonin makes clear, few areas of science are as complex and multidisciplinary as the planet''s climate." --Mark P. Mills, Wall Street Journal "Any reader would benefit from its deft, lucid tour of climate science, the best I''ve seen.

" --Holman W. Jenkins, Wall Street Journal "Fascinating and informative reading, and one hopes it will improve the climate for honest and open discussion." --Jonathan Tennenbaum, Asia Times "Koonin points out scientific facts supported by hard data and the peer-reviewed literature." --Tilak Doshi, Forbes "Koonin takes his fellow scientists to task for withholding the information he presents in this book. Ironically, most of the data he reports comes directly from the very reports that are used to exaggerate the problems we face. This scientific malpractice seems mainly driven by self-interest . Because of this, it is time confront the true climate deniers." --Robert M.

Whaples, The Independent Review "Koonin takes deliberate, explicit care to write dispassionately and factually . This book should be read by every journalist, pundit, and environmental activist, and by all politicians, policymakers, as well as their staffs." --Henry Bauer, Journal of Scientific Exploration "Koonin . is an authority, in the best academic sense of the word . Unsettled will be a mainstay of reference sections in heterodox critiques of the climate-catastrophe-industrial complex for years to come." -- Commentary "We have too many global warming booksbut this one is needed. Steven Koonin has the credentials, expertise, and experience to ask the right questions and to give realistic answers." --Vaclav Smil, distinguished professor emeritus at the University of Manitoba " Unsettled is an excellent case study on climate science, its inherent complexity and uncertainty, and a cautionary tale on how interpretive filters in the policymaking process have shaped, and sometimes misinformed, the climate policy debate.

It should on be the reading list of scientists and engineers whose responsibility, as citizens, extends beyond the laboratory to communicating to a larger public often overwhelmed and confused by the media. Policymakers and politicians will find it a source of reflection for their arguments, positions, and decisions." --Jean-Lou Chameau, President Emeritus, Caltech "Essential reading and a timely breath of fresh air for climate policy. The science of climate is neither settled nor sufficient to dictate policy. Rather than an existential crisis, we face a wicked problem that requires a pragmatic balancing of costs and benefits." --William W. Hogan, professor of global energy policy at Harvard Kennedy School "Tough talk about climate politics from a statesman scientistand a vision of what will actually come to pass." -- Robert B.

Laughlin, professor of physics at Stanford University "Steve Koonin, the undersecretary for science under Obama, has written a very interesting and thoughtful book on climate. He documents how much of what you think you know about climate just ain''t so. Did you know that while the United States is now seeing many fewer cold records, absolute heat records are not increasing? Unsettled will definitely and rightly unsettle your climate thoughts, and all for the better. If we are to make trillion dollar investments, we deserve to be as well informed as possible." --Bjørn Lomborg, president of Copenhagen Consensus and visiting fellow at The Hoover Institution at Stanford University.