The Bostrom Footnote That Ate the Book

Reread in 2026, the wildfire chapter and the heat chapter barely need updating. Wallace-Wells describes Montecito's mudslide evacuations — "the fourth evacuation order precipitated by a climate event in the county in just three months" — as a portrait of affluence discovering it isn't exempt, and every fire season since has restaged the scene with a bigger cast: Lahaina, the Los Angeles fires that opened this year, the Canadian smoke that turned New York orange in 2023 in a way that reads now less like reportage and more like a chapter he hadn't gotten to write yet. The wet-bulb temperature math holds up. The AMOC slowdown he treats as a live uncertainty has, in the years since, moved from "possible" to "actively being dated" by oceanographers arguing over decades rather than centuries. Where the book erred was mostly in the direction of insufficient alarm — the "best-case scenario" language keeps having to be revised downward, not up, which is the least comforting kind of being wrong.

The chapter that has aged strangest is the one that seemed, in 2019, like a digression: the survey of Nick Bostrom's existential-risk taxonomy and Silicon Valley's transhumanist escape fantasies. Wallace-Wells quotes Sam Altman as having "made a down payment on a brain-upload program" and frames this, accurately for its moment, as evidence that tech elites regarded climate as a problem for other people's grandchildren. Five years later that same man runs the company most responsible for a genuinely new fact this book had no way to anticipate: that the industry supposedly too busy plotting escape velocity to worry about the grid would instead build the grid's newest and most voracious tenant. Data centers reopening Three Mile Island, utilities delaying coal retirements to feed model training — the book's line that "the only fearsome power they are likely to take seriously is the one they themselves have unleashed" reads now like it was describing next year's headlines rather than 2019's anxieties. Climate change didn't get solved by technological transcendence. It got a new competitor for the culture's finite supply of existential dread, and the competitor is winning, partly because the people running it are the same people this book caught mid-fantasy about uploading their minds to avoid the weather.

That displacement matters more than any single missed data point. The book itself worried, in its chapter on capitalism and narrative, that crisis tends to get absorbed rather than acted on — that disaster consolidates power instead of forcing reform, Puerto Rico as the case study. It's a sharper diagnosis of its own reception than Wallace-Wells could have intended. *The Uninhabitable Earth* was a sensation: bestseller lists, magazine excerpts, assigned in classrooms, cited as the text that finally made the scale of