Columbia Business School
392 Henry R. Kravis Hall
665 West 130th Street
New York, NY 10027
United States

Please sign up to meet during office hours (in person or via zoom) or join me on a morning run. (Priority for both given to Columbia students.)

For press inquiries, please email press@gsb.columbia.edu.

For speaking inquires—virtual or otherwise—email Wesley Neff at the Leigh Bureau or call +1 (908) 253-860.

For review copies of Geoengineering: the Gamble in the US email Lucas Jones. For UK and global queries, email Emma Longstaff. For review copies of Climate Shock, in the US, email Alyssa Sanford; in Europe or elsewhere, email Caroline Priday.

See my preoccupations, follow me on Bluesky, Mastodon, or LinkedIn (skip Twitter, at least for now), sign up for email updates, or find me online at: Columbia Business School | Google ScholarLeigh Speakers Bureau | Project Syndicate | New York Times | Washington Post | LinkedIn | Amazon | Bloomberg Green | CESifo and the always trustworthy Wikipedia.

To reach me, email gwagner@columbia.edu. Or let me email you.