The patches of lichen you've probably seen growing on tree trunks and park benches might be easy to overlook, but they're actually some of the world's strangest living things. While they're sometimes ...

I know many of us want winter to come to an end, but I would like just one more good snowstorm. I love all seasons, but I need a little more of that winter bleakness in the woods, primarily to help me ...

We often see what we think of as moss growing among tree branches, or we see a crusty, colored coating on the bark of trees or rocks. Sometimes we notice a greenish velvet carpeting on rocks, walls or ...