ash tree

A researcher in Ohio was surrounded by hundreds of dead ash trees. They had been wiped out by this beetle called the emerald ash borer. But then, in that same forest, she found a lone tree thriving. Could this tree be the key to saving ash from extinction?

Ash trees were once abundant in Michigan, now hundreds of millions of them are dead. They were killed by the emerald ash borer, an invasive beetle native to Eastern Asia.

Ash trees were once abundant in Michigan, now hundreds of millions of them are dead. They were killed by the emerald ash borer, an invasive beetle native to Eastern Asia.

Researchers with the U.S. Forest Service are looking for ash trees that survived the attack of the emerald ash borer. The invasive insect has been...