Forest Service lichenologist Sarah Jovan hardly has to walk half a block from her office in downtown Portland to find the type of shaggy, green moss she used to discover the city's hidden hot spots of ...

Now that deciduous trees are bare, trunks and branches have taken center stage, and you might be noticing nuances and irregularities that evaded your attention over the summer. For instance, what are ...

PORTLAND, Ore. — Bullseye Glass and Precision Castparts both had to put out millions of settlement dollars after they were involved in class action lawsuits regarding their air pollution levels. Those ...

There are many myths we grow up believing, such as the link between proximity to the television and the potential for blindness. Other childhood fables are more specific to circumventing ‘bad’ luck by ...

Editor’s note: This is the first in a three-part “What’s on my tree?” series about organisms that are commonly found growing on trees in Louisiana. Here in Louisiana, we’re all familiar with Spanish ...

London is the latest city to gain a city bench with the ability to absorb as much pollution as a small forest. The vertical garden, which doubles as a bench, is Green City Solutions' CityTree. Using a ...

We just moved to Jacksonville from up north and I want to know if Spanish moss is harming my oak trees. There is also some kind of gray-green moss growing on the trunks. Let’s talk about Spanish moss ...

I just got back from a hike during which we spent a good deal of time discussing where moss grows on trees. The obvious answer is that moss is a shade-loving plant and so it grows on the shady side.

DEAR JESSICA: I have a pear tree that's about 55 years old and have noticed what looks like grass or moss on its limbs. Due to a neighbor's very tall house, this tree does not get much sun, especially ...

A forest is really a community of plants and animals. Within this large community are smaller groups of living things that grow together. Even an individual tree often has an association of plants ...