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War on the Rocks ·For the curious

The King of Cool: Mobile Refrigeration and the Remaking of Global Logistics

by Caitlan Fealing

Published 2026-07-23 07:45:53+00:00

How did a self-taught mechanic’s cooling box for the front lines end up filling the local supermarket?

0:00 / 13:15 · Narrator Gacrux

Context

A box of fresh strawberries on a supermarket shelf in the dead of winter is a quiet feat of engineering. Writing on 23 July 2026, Caitlan Fealing tells the story of Frederick McKinley Jones, the self-taught mechanic who built the first mobile cooling units. While his invention started as a fix for a local trucker, the pressure of World War II turned it into a global standard. Fealing shows how a technology born to feed soldiers on the front lines ended up changing the way people eat and how cities are built.

Show notes

Frederick McKinley Jones’ 1938 invention of mobile refrigeration changed military supply lines and the global food trade. Developed as a solution for spoiled produce, the technology was used to ship blood and penicillin during World War II. These wartime developments eventually built the modern cold chain, allowing for the transport of temperature-sensitive food and medicine across the United States.

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