Rafe Pomerance, who died on May 21, 2026 at age 79, spent nearly five decades trying to make the world take climate change seriously before it was too late. I last spoke with him at the Arctic Repair conference in Cambridge in summer 2025, where he told me his message was "absolutely the same" as it had been in 2018: the fate of Miami is tied to the fate of Greenland.
A Career That Started With a Coal Report
Pomerance's climate awakening began almost by accident. In the late 1970s, while lobbying for clean air at Friends of the Earth, he came across a government report on coal liquefaction warning that carbon dioxide emissions could cause a "significant and damaging" rise in Earth's temperature. From that point he devoted himself almost entirely to climate change, pushing Congress toward hearings and testifying himself in 1984 that the consequences, once clear, would be irreversible. He helped organize the landmark 1986 Senate hearings on the greenhouse effect, a genuine turning point in public awareness. From 1986 to 1993 he worked at the World Resources Institute, and under President Clinton he became Deputy Assistant Secretary of State for Environment, leading the U.S. negotiating team that helped produce the Kyoto Protocol.
In August 2018, the New York Times Magazine devoted an entire issue — "Losing Earth: The Decade We Almost Stopped Climate Change" — to the story of how climate action nearly happened in the 1980s, with Pomerance at its center. The piece, later expanded into a book of the same name, cemented his reputation as one of the movement's earliest and most persistent voices, sometimes dubbed the "Paul Revere of climate change."
In our Cambridge interview, Pomerance was focused on his final project: the Upper Limit Project, which sought to establish a global cap on sea-level rise as a companion metric to the 1.5°C temperature target. He argued that temperature alone had failed to sufficiently drive policy, but that sea-level rise — visceral, universal, and tied to the collapsing Greenland ice sheet's 24 feet of locked-up sea-level potential — could finally galvanize leaders from Miami to Tuvalu. He was candid about America's retreat from climate leadership under President Trump, calling the dismantling of the Inflation Reduction Act "a real tragedy," though he found some relief in China's growing role in clean energy technology.
Despite the political headwinds, Pomerance remained resolutely hopeful. "It's just not acceptable to lose the homes of hundreds of millions of people over time," he told me, "and that's not an outcome that the world can accept." He leaves behind a policy legacy stretching from the Clean Air Coalition to Kyoto to the Arctic Repair movement, and generations of scientists and advocates he personally inspired.
The Cover That Made Him FamousStill Pushing, Even at the EndAn Optimist to the Last
