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

While warm temperatures will lead to increased pollen counts over a longer period in some areas of the country, there is some ...

As tempting as it is to move climate change to the back burner of concerns while the White House shockingly attacks so many ...

Arborists are hoping to transform vacant land on Detroit’s eastside by planting giant sequoias, the world’s largest trees.

Periods including “fish emerge from the ice” in mid-February and “rainbows hide” in late November offer a framework for ...

Drought conditions in most of California will worsen air quality and increase airborne particulates like dust and pollen.

Once the flowers open, cherry blossoms typically stick around for just one to two weeks, and that window can shrink depending ...

Scientists discovered trees use a biological clock to time growth. Changing this clock helps trees grow better and adapt to new environments.

A new study from Umeå University has revealed that trees' circadian clocks guide their growth and the timing of seasonal ...