Episode Details

The emerald ash borer, a deadly invasive beetle that once promised the near-total extinction of ash trees, is now facing its biggest threat yet: nature’s own solution. Three imported wasps, rigorously tested for over a decade, are thriving and feeding on the beetles, bringing their numbers under control. While full recovery won’t happen overnight, foresters are already planting 1,300 ash seedlings across New Hampshire, betting that with these biocontrols—and help from birds, weather, and other insects—ash trees can make a comeback. It’s not magic, but it’s hope.

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