From Steven Koonin, a leader in US science policy and former science advisor for the Obama administration, Unsettled is an up-close, apolitical exploration of the many misconceptions and shortcomings in the mainstream presentation of climate science-which is far less black-and-white than many people realize. “We have too many global warming books—but 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

“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 scientist—and a vision of what will actually come to pass.”

—Robert B. Laughlin, Stanford University

“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.”

—Bjorn Lomborg, president of Copenhagen Consensus and visiting fellow at The Hoover Institution at Stanford University