Stephen Lezak is a writer, researcher, and advocate working at the intersection of climate politics and environmental justice.

His essays, reporting, and research appear in several academic journals and edited books, as well as The New York Times, The New Republic, Emergence, Grist, The Independent, and High Country News. His research and writing have been covered by The Washington Post, The Guardian, The Financial Times, Al Jazeera, The Times (UK), and translated into five languages.

He served as an expert reviewer for the IPCC's 6th Assessment Report and has advised two U.S. Presidential campaigns on climate policy. He was formerly a Gates Scholar at Cambridge, where he received a PhD in Polar Studies.

He is currently based at two universities—Berkeley and Oxford—and is writing a book on Indigenous climate justice for Simon & Schuster.

He lives in Berkeley, California.