Navigating Vaccine-Derived Polio Threats with Innovative Solutions

The worst predictions for costs have not come to pass, partly because Russia is selling plenty of wheat. But plenty of food-price woe may still await. We examine the curious re-appearance of the polio virus in the West. And the trials of “Pink Sauce” reveal the perils of being a cottage-food producer—or consumer—in the social-media age.

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