Pollen.com said pollen levels are measured based on the amount of pollen in the area. To measure the pollen count, scientists will use a rod covered with a sticky substance to the roof of a building.

Among the oaks, white, red and bur oak all stand tall as ecological heavyweights. Their acorns feed wildlife, their canopies ...

Seattle Times reporter Lynda V. Mapes, in an effort to learn more about our forests, overcame her fear and climbed a 200-foot ...

Allergy season can be miserable for tens of millions of Americans when trees, grass, and other pollens cause runny noses, ...