Toronto is on the defensive with a plan to thwart the spread of an invasive scourge that has already killed millions of trees ...

The tree removal project was prompted by the presence of the emerald ash borer, an invasive wood-boring beetle. In Greater Sudbury, as in many other parts of North America, the ash population has been ...

Releaf Michigan, a non-profit tree-planting organization, is hosting its 16th Biennial Michigan Big Tree Hunt beginning May 20. Here's what to know.

Minnesota's Carver County Parks promotes awareness and action against the invasive emerald ash borer to protect local trees.

U.S. Customs and Border Protection agriculture specialists at Detroit Metro Airport found rare seed bugs among undeclared cypress cones arriving from Jordan.

In environmental news it’s Emerald Ash Borer awareness week and the Oregon Department of Forestry is working to slow the ...

Dave Mullen cuts up a dying ash tree to be hauled away in 2017. Hundreds of ash trees in Winona have been killed by the ...

Mount St. Helens erupted, killing dozens and forever changing how the US monitors earthquakes. The volcano is still active ...

Invasives have largely wiped out the American chestnut and elm, caused “hell” with the beech, and are now wreaking havoc on ...

The district forester of St. Lawrence County Soil and Water says that in 10 years, all ash trees in the county will be dead ...

The Chicago Park District is undertaking an inventory of its trees — counting their numbers and recording their health — in ...

Pests are ravaging keystone species like ash, elm, and beech. But researchers are breeding the survivors into more resilient ...