Oak trees are valuable to the Northwoods environment, recreation and wood products industries, but many are in danger.

Well over half of the human population is sensitive to poison ivy, poison oak or poison sumac. Rashes usually peak in early ...

Find out which type of oak trees to plant, plus the benefits they offer to your landscape and the environment.

Mexico’s mountains hold nearly half of the world’s oak species. New research explains how landscape and time shaped this diversity.

Every spring across Europe, billions of oak leafroller moth caterpillars hatch on oak branches and immediately start chewing.

After years of fighting and litigation, a plan comes together.

In late April, across the oak forests of northern Bavaria, millions of spongy moth caterpillars hatch from egg masses glued ...

Poison ivy is native to Wisconsin. It grows low to the ground and can cause a serious rash.

Oak Creek Police said it was a reminder of the danger officers face every day: a driver pulling away, nearly pinning the officer between two vehicles. "Oh ," Officer Matthew Hoppe yelled in pain.

Spider mites are a likely cause of yellow tomato leaves in Texas. Here's how to check.

After two previous attempts to decide how to deal with a couple who chopped down 38 trees in North Oakland in violation of the city’s Protected Trees Ordinance, the Oakland City Council decided ...