"The emerald ash borer, an invasive beetle that has destroyed millions of trees in North America since being accidentally introduced from Asia, has been identified in Massachusetts for the first time, state officials said on Wednesday."

"Two Pacific Northwest conservation organizations are seeking permission from a federal court in Washington to fight a lawsuit that aims to limit the use of science to help manage U.S. national forests."

"Wildfires burning across the northern Rockies threatened hundreds of homes on Monday in Idaho, Wyoming and Montana, while firefighters in Washington state scrambled to battle scores of blazes sparked by weekend lightning storms across the eastern Cascades."

Ancient chestnut trees in Europe are vanishing. "The culprits: a moth that produces leaf-eating larvae and a bacterium that makes trunks bleed and die. ... A cure? Not immediately in sight."

"A new management plan for the Giant Sequoia National Monument further limits logging in and near groves of the world's largest trees, but would still allow it in nearly a quarter of the monument."

"A 4,000-acre (1,620-hectare) wildfire in the Angeles National Forest in Southern California has forced the evacuation of some campsites as firefighters struggle to control the blaze, authorities said on Monday."

"Fire scientists are calling it 'the new normal': a time of fires so big and hot that no one can remember anything like it."

"The FLAME Act of 2009 was supposed to ensure the Forest Service had enough money to fight fires without having to cut into programs to provide recreation, protect habitat and improve forest health. But after Congress raided the fund established by the law during the 2011 standoff over the debt ceiling, and after further cuts this year, the fund is empty."