Q: Bill, on the bark of my Crepe Myrtles, I noticed grayish growth. I can peel this growth off fairly easily. What is this growth and is it hurting my tree? A: It sounds like you have lichens. Lichens ...

A stop-motion short film by Dan Wagner. A man, separated from the world, ponders his isolation. As he spirals, he accidentally intercepts a message from space, detailing where the end of the world ...

Lichen planus is a skin rash triggered by the immune system. It’s not currently known why this immune response occurs. There may be several contributing factors, and each case is different. Potential ...

“Moreover, documentation of the location of the lichens is ongoing,” Alireza Askari-Chaverdi said. “Lichens are one of the most damaging factors to historical buildings, especially stone monuments.