By Jessica MacDiarmid, National Observer, July 14, 2022
The emerald ash borer is a green bug the size of a thumbnail. And it has killed tens of millions of trees in North America — and caused billions in damage — since it hitched a ride from Asia 20-odd years ago.
The beetle larvae tunnel through trees, feeding off their nutrients and eventually killing them. It has no natural predators in North America. It has proven difficult to contain with quarantine measures and expensive to eradicate with pesticides.
Now, scientists and foresters are trying a new method of controlling the invasive species — introducing another invasive species that, it’s hoped, will eradicate the emerald ash borer.