The citizens of Sellumine constructed a spherical device that hovers above their city, absorbing all the impurities in the surrounding air. The collected impurities are compressed into clear, crystal-like formations, which slowly accumulate through the center of the city. The buildings, which are stacked vertically, slowly spin, powered by the collected material. It has been observed that it is not solely material pollution that powers Sellumine, but mental and spiritual pollution as well. The stress of an over-worked citizen gets recycled back into the city. A lie gets converted into pure energy. Destructive forces in a war overseas eventually are converted into creative forces in Sellumine.