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

Read This Next

See 100 years of the Lincoln Memorial in photos
Next-gen weather station installed near Everest’s summit
Hard hit by COVID-19, Black Americans are recovering slowly

Go Further

Subscriber Exclusive Content

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet