In 1990, Paul Ehrlich mailed a check for $576.07 to an economist named Julian Simon. Simon had bet him that the price of five metals would fall over a decade. Ehrlich took the bet because he believed scarcity was inevitable. Every price dropped. The market optimist won. The catastrophist paid up.

Last Friday, Ehrlich died in Palo Alto at 93. Every obituary this weekend noted that he got virtually everything wrong. That's true, but it undersells the damage. Ehrlich's legacy isn't a series of bad predictions. It's a record of what happens when governments believe a catastrophist.

What he promised

The Population Bomb opened in 1968 with a declaration: the battle to feed humanity was already lost. Hundreds of millions would starve in the 1970s. He predicted 65 million Americans would die of famine in the 1980s, with the U.S. population collapsing to 22.6 million by 1999. In a 1971 speech to the British Institute for Biology, he gave even odds that England would not exist by the year 2000.

The book sold three million copies. He appeared on The Tonight Show more than 20 times. Johnny Carson made a doomsday prophet into a household name, and an entire generation of policymakers treated The Population Bomb like a field manual.

What actually happened

The world's population more than doubled, from 3.5 billion in 1968 to 8.3 billion today. Instead of mass starvation, the share of undernourished people in developing countries fell from 37% to 8.2%. Norman Borlaug's Green Revolution is credited with saving a billion lives. Borlaug grew the food. Ehrlich predicted the famine.

Global life expectancy rose from 57 to 73 years. The death rate dropped from 12 per 1,000 to 8. Daily calories per person climbed by a third. Extreme poverty, which afflicted the majority of the world's population when Ehrlich wrote his book, has fallen below 10%. The population bomb never went off. A prosperity bomb did.

The man who was never in doubt

Ehrlich lost the Simon bet and carried on predicting. In a 2004 interview with Grist, he said he felt "little embarrassment" about the criticism. By 2009, he was calling The Population Bomb "way too optimistic." In 2023, at 90, he appeared on 60 Minutes and told Scott Pelley the collapse of civilization was still imminent. Pelley acknowledged on air that Ehrlich had been wrong and that the Green Revolution fed the world. CBS aired it anyway. A man whose track record would get a weatherman fired was treated like an elder statesman of science.

Everyone writing about Ehrlich this week has focused on what he got wrong. But the predictions are only half of the story. The far more disastrous part of his legacy is what happened when governments took him seriously.

When governments listened

Ehrlich didn't just write a bestseller. He proposed that the United States supply helicopters, surgical instruments, and doctors to assist mass sterilization campaigns in India. In The Population Bomb, he made the philosophy explicit: population control should come "by compulsion if voluntary methods fail."

Ehrlich paid $576 for losing a bet. India paid differently. During the Emergency of 1975-77, Prime Minister Indira Gandhi's administration forcibly sterilized 6.2 million men in a single year, the largest coercive sterilization campaign in modern history. Men were rounded up at marketplaces and bus stops. Villages that refused to meet quotas had their irrigation water cut off.

The international community didn't object. It funded the effort. The World Bank loaned India $66 million for the program. The United States made food aid contingent on sterilization quotas. The theory had foundation money and credentialed allies across the development establishment.

The ideology traveled. China's Communist Party implemented its one-child policy in 1980 and ran it for 35 years. Enforcers conducted forced abortions and sterilizations. Families who violated the quota lost wages, housing, and access to public schools. The policy was population control at an industrial scale, applied to a fifth of the world's people.

The demographic damage is now irreversible. China's fertility rate has collapsed to 0.98, well below the replacement rate. The country recorded 7.92 million births in 2024, its lowest since 1949, down 17% from the year before. Beijing is now paying couples to have children. The UN projects China will lose half its population by 2100. The bomb Ehrlich feared was demographic collapse. He just aimed it at the wrong countries.

Capitalism doubled the world's population and fed it. Central planning believed Ehrlich and threw its people off the side of a cliff.

The question wasn't wrong

Give the man his due. Ehrlich asked a legitimate question: Can the planet sustain billions more people? Resources are finite. Pressure on arable land is real. Food systems are not infinitely elastic.

But the question wasn't the problem. Ehrlich looked at a growing population and saw mouths to feed. Borlaug looked at the same population and found a solution. One assumed a static world with fixed resources and passive humans. The other assumed an adaptive one. One fed a billion people. The other proposed sterilizing them.

The pattern that survived him

Ehrlich is dead, but the template lives. A credentialed expert makes unfalsifiable predictions of doom. The predictions fail. The expert keeps his platform. And the prescription never changes: more centralized control, less individual freedom, trust the people who got it wrong last time.

In 2020, Neil Ferguson's Imperial College model projected 2.2 million American COVID deaths without intervention. That projection shaped lockdown policy across the Western world, shuttering schools, closing businesses, and suspending civil liberties for months. Ferguson had previously overestimated the number of fatalities from mad cow disease, swine flu, and bird flu. He kept his job. The pattern held.

Paul Ehrlich spent 58 years warning that humanity was running out of everything. He died at 93 in Palo Alto, one of the wealthiest places human beings have ever built, in a world that doubled its population and more than doubled its prosperity. He was wrong about the bomb. The only thing that exploded was abundance.

He died surrounded by the kind of wealth and prosperity he proclaimed impossible. Unfortunately, millions are dead from his ruinous beliefs. His life, beliefs, and book will join the ash heap of history.