Dear Neil: I just noticed this bark damage in my otherwise healthy looking mature live oak. It seems like it happened almost overnight. I have woodpeckers and squirrels, but I have not seen much ...

Now that the majority of our deciduous plants have dropped their leaves, you may notice gray growths on the trunks of some trees and shrubs in your landscape. Most likely, these are lichens, which, ...

Kinloch, Skye Though the land is deserted now, the signature of human habitation is deeply imprinted upon it High about the shoreline, looking across the Sound of Sleat, lie the remains of the ...

One morning recently, I slipped out on a small kayak into the sheltered bay of Glengarriff Harbour in Cork. As the American naturalist Henry David Thoreau would have said, it was a “good lichen day”: ...

Lichens are the curious result of cohabitation between algae and fungi. Biologist Frank Bungartz tells DW about his passion for lichens - and why seeing them disappear should ring alarm bells. DW: You ...