en-us https://www.intensedebate.com/users/784096 Comments by Merc2 http://eartheasy.com/blog/2010/02/connecting-to-nature-close-to-home/#IDComment55701654 I have always been fascinated by trees in the city. I always wondered what those mossy things on the bark of the trees. I later found out that they are called lichens and they are pollutant detectors, meaning the more polluted the place the more chance you cant see lichen on trees..interesting bits of facts.. Sun, 7 Feb 2010 08:38:23 +0000 http://eartheasy.com/blog/2010/02/connecting-to-nature-close-to-home/#IDComment55701654