Unsettled (Updated and Expanded Edition): What Climate Science Tells Us, What It Doesn't, and Why It Matters
Steven E. Koonin
Jun 2024 · BenBella Books
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About this ebook
In this updated and expanded edition of climate scientist Steven Koonin’s groundbreaking book, go behind the headlines to discover the latest eye-opening data about climate change—with unbiased facts and realistic steps for the future.
"Greenland’s ice loss is accelerating."
"Extreme temperatures are causing more fatalities."
"Rapid 'climate action' is essential to avoid a future climate disaster."
You've heard all this presented as fact. But according to science, all of these statements are profoundly misleading.
With the new edition of Unsettled, Steven Koonin draws on decades of experience—including as a top science advisor to the Obama administration—to clear away the fog and explain what science really says (and doesn't say). With a new introduction, this edition now features reflections on an additional three years of eye-opening data, alternatives to unrealistic “net zero” solutions, global energy inequalities, and the energy crisis arising from the war in Ukraine.
When it comes to climate change, the media, politicians, and other prominent voices have declared that “the science is settled.” In reality, the climate is changing, but the why and how aren’t as clear as you’ve probably been led to believe.
Koonin takes readers behind the headlines, dispels popular myths, and unveils little-known truths:
Despite rising greenhouse gas emissions, global temperatures decreased from 1940 to 1970
Models currently used to predict the future do not accurately describe the climate of the past, and modelers themselves strongly doubt their regional predictions
There is no compelling evidence that hurricanes are becoming more frequent—or that predictions of rapid sea level rise have any validity
Unsettled is a reality check buoyed by hope, offering the truth about climate science—what we know, what we don’t, and what it all means for our future.
"Greenland’s ice loss is accelerating."
"Extreme temperatures are causing more fatalities."
"Rapid 'climate action' is essential to avoid a future climate disaster."
You've heard all this presented as fact. But according to science, all of these statements are profoundly misleading.
With the new edition of Unsettled, Steven Koonin draws on decades of experience—including as a top science advisor to the Obama administration—to clear away the fog and explain what science really says (and doesn't say). With a new introduction, this edition now features reflections on an additional three years of eye-opening data, alternatives to unrealistic “net zero” solutions, global energy inequalities, and the energy crisis arising from the war in Ukraine.
When it comes to climate change, the media, politicians, and other prominent voices have declared that “the science is settled.” In reality, the climate is changing, but the why and how aren’t as clear as you’ve probably been led to believe.
Koonin takes readers behind the headlines, dispels popular myths, and unveils little-known truths:
Unsettled is a reality check buoyed by hope, offering the truth about climate science—what we know, what we don’t, and what it all means for our future.
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April 11, 2025
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About the author
Dr. Steven E. Koonin is a leader in science policy in the United States. He served as Undersecretary for Science in the US Department of Energy under President Obama, where he was the lead author of the Department's Strategic Plan and the inaugural Quadrennial Technology Review (2011). With more than 200 peer-reviewed papers in the fields of physics and astrophysics, scientific computation, energy technology and policy, and climate science, Dr. Koonin was a professor of theoretical physics at Caltech, also serving as Caltech's Vice President and Provost for almost a decade. He is currently a University Professor at New York University, with appointments in the Stern School of Business, the Tandon School of Engineering, and the Department of Physics. Dr. Koonin's memberships include US National Academy of Sciences, the American Academy of Arts and Sciences, and the JASON group of scientists who solve technical problems for the US government. Since 2014, he has been a trustee of the Institute for Defense Analyses and chaired the National Academies' Divisional Committee for Engineering and Physical Sciences from 2014-2019. He is currently an independent governor of the Lawrence Livermore National Laboratory and has served in similar roles for the Los Alamos, Sandia, Brookhaven, and Argonne National Laboratories.
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