Book Summary and Reviews of They Poisoned the World by Mariah Blake

They Poisoned the World by Mariah Blake

They Poisoned the World

Life and Death in the Age of Forever Chemicals

by Mariah Blake

  • Published:
  • Jul 2025, 320 pages
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About this book

Book Summary

A landmark investigation of the chemical industry's decades-long campaign to hide the dangers of forever chemicals, told through the story of a small town on the frontlines of an epic public health crisis.

In 2014, after losing several friends and relatives to cancer, an unassuming insurance underwriter in Hoosick Falls, New York, began to suspect that the local water supply was polluted. When he tested his tap water, he discovered dangerous levels of forever chemicals. This set off a chain of events that led to 100 million Americans learning their drinking water was tainted. Although the discovery came as a shock to most, the U.S. government and the manufacturers of these toxic chemicals—used in everything from lipstick and cookware to children's clothing—had known about their hazards for decades.

In They Poisoned the World, investigative journalist Mariah Blake tells the astonishing story of this cover-up, tracing its roots back to the Manhattan Project and through the postwar years, as industry scientists discovered that these chemicals refused to break down and were saturating the blood of virtually every human being. By the 1980s, manufacturers were secretly testing their workers and finding links to birth defects, cancer, and other serious diseases. At every step, the industry's deceptions were aided by our government's appallingly lax regulatory system—a system that has made us all guinea pigs in a vast, uncontrolled chemistry experiment.

Drawing on years of on-the-ground reporting and tens of thousands of documents, Blake interweaves the secret history of forever chemicals with the moving story of how a lone village took on the chemical giants—and won. From the beloved local doctor to the young mother who took her fight all the way to the nation's capital, citizen activists in Hoosick Falls and beyond have ignited the most powerful grassroots environmental movement since Silent Spring.

Humane and revelatory, this book will provoke outrage—and hopefully inspire the change we need to protect the health of every American for generations to come.

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Reviews

Media Reviews

"Impeccably researched and outrageous both in the scope of [corporate] malfeasance and the efforts of those who support it, the narrative never strays from its relentless documentation of the generational price paid for our decades of lax regulation. A must-read." —Booklist (starred review)

"A crackling David vs. Goliath story...[Blake's] impressive research provides damning evidence of PFAS manufacturers' callous indifference. Readers will be outraged." —Publishers Weekly

"A sharp-edged report on the world that toxic chemicals—and their manufacturers—have made." —Kirkus Reviews

This information about They Poisoned the World was first featured in "The BookBrowse Review" - BookBrowse's membership magazine, and in our weekly "Publishing This Week" newsletter. Publication information is for the USA, and (unless stated otherwise) represents the first print edition. The reviews are necessarily limited to those that were available to us ahead of publication. If you are the publisher or author and feel that they do not properly reflect the range of media opinion now available, send us a message with the mainstream reviews that you would like to see added.

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Author Information

Mariah Blake

Mariah Blake is an investigative journalist whose writing has appeared in The Atlantic, Mother Jones, The New Republic, and other publications. She was a Murrey Marder Nieman Fellow in Watchdog Journalism at Harvard University.

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