a studio image of a dead emerald ash borer beetle on white

How to fight an invasive American bug with a badder Russian one

The emerald ash borer has been killing trees across the U.S. for decades. A hardy parasitic wasp from Russia’s cold Far East could finally do the beetle in.

An emerald ash borer, the beetle responsible for decimating ash tree populations throughout North America.
Photograph by Rebecca Hale, Nat Geo Image Collection

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