Lichen it, and see what level of pollution there is in your environment. All you have to do is look for the lichens on a tree near you, take a photo and send it to LoveLichen. Attach some information about the location of the tree and size of the lichen. This will be mapped to create a larger picture of what is going on in our environment. If you don't know what lichens are, check out the species gallery. For more information on how to get involved with Lichen It, see the HOW TO TAKE PART page. With your help we can build a picture of the environment that celebrates the positive growths of lichen - being active and encourage sustainability.