By Abbas Nazil
William Nordhaus, the Nobel Prize-winning economist whose pioneering research transformed the understanding of the economic consequences of climate change, has died at the age of 85.
Nordhaus, a Sterling Professor of Economics Emeritus at Yale University, died on October 30, 2026, following a battle with glioblastoma, an aggressive form of brain cancer.
He was awarded the 2018 Nobel Prize in Economics for integrating climate change into long-term macroeconomic analysis, providing policymakers with influential economic frameworks for understanding global warming and developing strategies to reduce greenhouse gas emissions.
His groundbreaking research demonstrated how climate change could undermine economic growth through rising temperatures, agricultural losses, rising sea levels and other environmental consequences.
One of his most significant contributions was the development of the Dynamic Integrated Climate-Economy (DICE) model, which examines the interactions between carbon emissions, climate change and economic development.
The model enables governments and policymakers to estimate the economic costs of global warming and compare them with the financial implications of implementing measures to reduce emissions.
Through his research, Nordhaus also advanced the argument that carbon taxation could provide an economically efficient mechanism for discouraging pollution and encouraging reductions in greenhouse gas emissions.
In his Nobel Prize lecture, he described climate change as an unintended harmful consequence of economic growth and argued that pollution charges, particularly carbon taxes, could help address the problem.
His death was announced by Yale University in a statement published on Saturday, October 31, which highlighted his contributions to climate economics and his influence on research into strategies for addressing global warming.
Nordhaus began exploring the economic implications of climate change in the 1970s, at a time when relatively few economists were examining the relationship between environmental degradation and economic development.
His early research, subsequent publications and international lectures helped establish climate economics as an important area of academic and policy research.
His work continues to influence discussions about carbon pricing, climate mitigation costs and the economic consequences of delaying action against global warming.
Beyond climate change, Nordhaus contributed to research on technological progress, economic cycles, political elections and the measurement of economic welfare.
He also collaborated with fellow Nobel laureate James Tobin on studies examining economic performance and welfare measurement.
At Yale University, where he spent more than five decades, Nordhaus held several academic and administrative positions, including serving as provost between 1986 and 1988 and vice president for finance and administration from 1992 to 1993.
In 2014, he helped develop Yale’s internal carbon charge system, making the university one of the first major higher education institutions to experiment with institutional carbon pricing.
The initiative reflected his research interest in using economic instruments to address greenhouse gas emissions and encourage climate-conscious institutional practices.
Nordhaus also served in several national economic institutions, including the Congressional Budget Office Panel of Economic Experts, the Federal Reserve Bank of Boston and the President’s Council of Economic Advisers.
He was a member of the United States National Academy of Sciences and a former president of the American Economic Association.
Born in Albuquerque, New Mexico, Nordhaus joined Yale as an undergraduate in 1959 before proceeding to the Massachusetts Institute of Technology for postgraduate studies under Nobel laureates Paul Samuelson and Robert Solow.
He later returned to Yale as an assistant professor, where he taught generations of students and contributed to the university’s academic and institutional development.
Yale President Emeritus Richard Levin described him as a scholar who pursued knowledge with rigour and purpose, noting that his commitment to understanding climate economics was driven by a desire to prevent avoidable harm from uncontrolled global warming.
William Brainard, an emeritus professor of economics and Nordhaus’ close colleague for 60 years, also praised his intellectual curiosity and contributions to understanding climate change and economic development.
Nordhaus is survived by his wife, Barbara, three children and three grandchildren.
Yale University said funeral arrangements would remain private, while a memorial service would be announced later.
