How Hungry, Stingless Wasps Became USDA’s Weapon of Choice to Save Southern Citrus Trees

By Philip Keifer

Popular Science

On a hot Wednesday morning in early June, Joseph Bravata pulled a black SUV with federal plates into a suburban playground parking lot outside New Orleans. The asphalt was bounded on the north by a tangle of oak and tallow trees, and to the east it faced a subdivision with big lawns and wide streets.

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