Cameraria ohridella, an invasive moth species, has emerged as a significant pest affecting horse chestnut trees (Aesculus hippocastanum) across Europe. The larvae of this leaf miner penetrate and feed ...

Two new studies on the environmental impact of transgenic American chestnut trees provide evidence that the trees have no harmful effects on germinating seeds, beneficial fungi, or larval frogs that ...

CENTREVILLE, Del. (AP) — After the species was devastated by an Asian blight in the early 20th century, a single American chestnut tree in Centreville has been deemed a “precious resource” by the ...

The American chestnut was all but destroyed by fungal blight and logged as settlements spread west when the United States was settled by Europeans. But lately, it’s making a comeback. Endangered for ...

The fall foliage season is sweeping through New Hampshire, causing residents and leaf-peepers to appreciate anew the forests in the state. The colors of the season are a function of forest health, and ...

In the early part of the 20th century, the American chestnut was ravaged by an invasive fungus that arrived from Asia. That fungus made the American chestnut functionally extinct, and although some ...

Bruce Beehler is a naturalist and author of 14 books, including the forthcoming “Flight of the Godwit.” This fall, I went hiking on Sugarloaf Mountain, about 30 miles northwest of the District.