“The Uninhabitable Earth” by David Wallace-Wells is the most terrifying book I have ever read. Its subject is climate change, and its method is scientific, but its mode is Old Testament. The book is a meticulously documented, white-knuckled tour through the cascading catastrophes that will soon engulf our warming planet: death by water, death by heat, death by hunger, death by thirst, death by disease, death by asphyxiation, death by political and civilizational collapse.

And should they escape death, your children and grandchildren might subsist instead through proto-apocalyptic ruin. There is a strong chance that warming will reduce global economic output by more than 20 percent and a chance that output could fall by half — a toll you might better describe as at least one, and possibly two or three, Great Depressions. War will not merely break out; a continuing, all-out resource war might be the steady-state of the next chapter of human civilization.

In 2017, when Mr. Wallace-Wells, a writer at New York Magazine, published similarly dire projections in a blockbuster article, he was criticized even by some climate scientists for reveling in the bleakest case. But his piece was one of the first articles I’d read that honestly drew out the most horrific possibilities of climate change, and in the two years since — years of hurricane and monsoon, fire and flood, mud slides, heat waves, the polar vortex — Mr. Wallace-Wells’s imagine-the-worst approach has become prescient.

[Farhad Manjoo will answer your questions about this column on Twitter on Friday at 2 p.m. Eastern: @fmanjoo]