Possibly old news, but somebody elsewhere on the Net just shared this link today, and I thought it may be something that you Coldplay fans might like. It urges you to get involved and plant a tree in the Coldplay Forest.
http://www.futureforests.com/acatalog/Future_Forests_plant_a_tree__Coldplay_Forest_57.html
http://www.futureforests.com/acatalog/Future_Forests_plant_a_tree__Coldplay_Forest_57.html