I write a monthly column for Project Syndicate. My latest books are »Stadt Land Klima« and Geoengineering: the Gamble, both published in 2021.

At Columbia Business School, I teach the introductory half course “Business and Climate Change” and one on “Climate Policy,” and I lead the fledgling Climate Knowledge Initiative.

My current research: 

“Carbon dioxide as a Risky Asset” (with Adam M. Bauer and Cristian Proistosescu; 20 July 2023; R&R at Climatic Change), a model building on “Declining CO2 Price Paths” (with Kent Daniel and Robert B. Litterman; PNAS, 1 October 2019); presentations: Columbia Sustainable Development seminar (21 November 2022), AGU Fall meetings (14 December 2022).

“Synthesis of evidence yields high social cost of carbon due to structural model variation and uncertainties” (with Frances C. Moore, James Rising, Simon Dietz, Moritz Drupp, and Ivan Rudik; 29 September 2023; R&R at Science); presentations: AGU Fall meetings (14 December 2022), CESifo Area Conference on Energy and Climate Economics, Munich (10 March 2023).

“Meeting Paris climate goals avoids pitting severe nuclear accidents against catastrophic climate change” (with Ruipu Yang, Rong Wang, Philippe Ciais, Josep Peñuelas, Gernot Wagner, Katsumasa Tanaka, Jordi Sardans, James Clark, Junji Cao, Jianmin Chen, Xu Tang, Xiajia He, Lin Wang & Renhe Zhang; 18 September 2023)

“Climate Policy Curves: Linking policy choices to climate outcomes” (with Martin C. Hänsel, Michael D. Bauer, Moritz A. Drupp & Glenn D. Rudebusch; CESifo Working Paper, 17 November 2022)

“Adverse Weather Events and Mental Health: Evidence from Health Insurance Records” (with Valeriya Azarova, Martin Halla & Gerald J. Pruckner)

“Climate shift uncertainty and economic damages” (with Romain Fillon & Manuel Linsenmeier)

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