Spread by trade and climate, bugs butcher America's forests

In a towering forest of centuries-old eastern hemlocks, it's easy to miss one of the tree's nemeses. No larger than a speck of pepper, the Hemlock woolly adelgid spends its life on the underside of needles sucking sap, eventually ...

Geneticists on cutting edge of effort to save ash trees

When Kim Steiner created an ash plantation on the edge of Penn State's University Park campus in 1978, few Americans thought about "climate change," no one had heard of the emerald ash borer, and the Yankees beat the Dodgers ...

New warning over spread of ash dieback

The ash dieback fungus could spread more quickly and affect more trees than previously expected, according to research at the University of Exeter.

The high costs of imported pests

A new analysis of the damage done by invasive forest pests shows that homeowners and local governments are being stuck with a $4.5 billion yearly bill for the boring beetles, choking fungi, and rogues' gallery of other foreign ...

ESA releases statement on the dangers of invasive species

The Entomological Society of America (ESA) has issued a statement about the dangers of invasive species and the potential threats they pose to U.S. national interests by undermining food security, trade agreements, forest ...

Poor outlook for ash trees

The future for ash – the tree that gave us food, fuel and the Sweet Track, one of the oldest roads in the world – looks bleak, according to a new survey of its biology and ecology. The review by tree expert Dr Peter Thomas ...

Collaboration, research key to managing invasive species

Invasive species, such as the gypsy moth and emerald ash borer, have had devastating effects on Pennsylvania's forests, and the keys to combatting these threats are active management, collaboration and research, according ...

Wasps may be battling ash-killing beetles

Five years ago, a Michigan Technological University entomologist set loose a swarm of tiny wasps in the woods around Calumet, Mich. His aim: to combat the invasion of a shiny, green beetle deadly to America's ash trees. Now ...

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