pollution

abuse air blight chimney contaminated contaminating contamination cramped cyanide damage dark deadly defile dense density desecration deterioration dirty earth ecology energy environmental eyesore factory fallout fog foul foulness fumes future gas global gray green greenhouse harm hazardous hurt impure impurity industrial industry infecting infection mist modern nature nuclear ozone poison polluted pollution poluted post power rotten sky smog smoke soiling spoil stacks steam toxic trees unclean vegetation warming waste world