Writing

My columns, essays, books, as well as research and teaching materials like case studies.

Articles (1—20 of 277)

The future of climate finance

The trend is clear. So are the challenges. One key task is to de-risk capital investments to lower costs. This is where public climate finance must play its most critical role – not as charity, but as leverage.

25 Jul 26

Decarbonizing Cement

Columbia Business School Climate Knowledge Initiative

16 Jul 26

Observational uncertainty is the primary source of climate uncertainty in impacts projections

by Kevin Schwarzwald, Nathan Lenssen, Thomas Bearpark, Alia Bonanno, Radley Horton, and Gernot Wagner

2 Jul 26

NJ.com: "This is how we make polluters pay, not N.J. families."

21 Jun 26

Beliefs, evidence, and climate action

by Mark Freeman, Ben Groom, Frikk Nesje, and Gernot Wagner

11 Jun 26

The AI Revolution Mirrors the Green Transition

The need for massive upfront investments and the likelihood of significant job displacement imply remarkable parallels between the AI buildout and the green transition. In both cases, the state has an important role to play in guiding market forces on behalf of the public good.

9 Jun 26