ChartOur World in Data

Prices of the five materials included in the Simon-Ehrlich wager

The change in the inflation-adjusted price of the five materials included in the wager between Julian Simon and Paul Ehrlich in the 1980s. Simon bet that prices would fall or stay constant between 1980 and 1990; Ehrlich bet that they would increase. Simon won the bet.

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Our World in Data
Updated
15 Dec 2025
Last checked
17 Sept 2026
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Data visualization: Prices of the five materials included in the Simon-Ehrlich wager

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USGS – Historical Statistics for Mineral and Material Commodities (2024)

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