Posadise
From Tardis Wiki, the free Doctor Who reference
Posadise appears from space as a green coloured planet with two rings. The rings are made up of asteroids (at least one inhabited by small blue furry creatures), and debris swept up from the planets surface by the huge sandstorms that sweep through the cities while the Posadians take shelter. For years the Posadians relied on this feature of the weather to keep their planet clean until the extent of waste material building up in the rings around the planet became too great and posed a problem for the lifeforms that lived in the rings. Only when the Posadians received visitors and believed them to be an invading force did they take note of their irresponsible behaviour. (DWAM: A Mess of Trouble)
