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Cleaned by Capitalism VIII

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Here’s a photograph of an amazing anti-pollution device:

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The retardation of bacteria growth in foods – retardation made possible by this nifty (and today unheralded) device (in home versions, such as this one, and in commercial versions, such as in trucks that carry foods to markets) – keeps us from suffering much of the bacteria pollution that sickened and killed large numbers of our ancestors.

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