Book: The Bet: Paul Ehrlich, Julian Simon, and Our Gamble over Earth’s Future

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The Bet: Paul Ehrlich, Julian Simon, and Our Gamble over Earth’s Future

Paul Sabin, associate professor of history

In 1980, the iconoclastic economist Julian Simon challenged celebrity biologist Paul Ehrlich to a bet. Their wager on the future prices of five metals captured the public’s imagination as a test of coming prosperity or doom. Ehrlich, author of the landmark book “The Population Bomb,” predicted that rising populations would cause overconsumption, resource scarcity, and famine — with apocalyptic consequences for humanity. Simon optimistically countered that human welfare would flourish thanks to flexible markets, technological change, and our collective ingenuity.

Simon and Ehrlich’s debate reflected a deepening national conflict over the future of the planet. “The Bet” weaves the two men’s lives and ideas together with the era’s partisan political clashes over the environment and the role of government. In a narrative leading from the dawning environmentalism of the 1960s through the presidential contest between Jimmy Carter and Ronald Reagan and on into the 1990s, Sabin shows how the fight between Ehrlich and Simon — between environmental fears and free-market confidence —helped create the gulf separating environmentalists and their critics today. Drawing insights from both sides, Sabin argues for using social values, rather than economic or biological absolutes, to guide society’s crucial choices relating to climate change, the planet’s health, and our own.