Caustic Vapors from the Witches 'Kitchen Acid rain gathers among clouds or dust that can float freely through the atmosphere, reaching into every corner of the world wherever the wind happens to blow. Rain in often particularly acidic in areas downwind from heavy industrial zones.
由於酸雨的前身是「自在又瀟灑，來去無牽掛」的酸雲或飄浮空中的灰塵，它們隨著風四處流浪、無遠弗屆，因此在重工業區的下風處，雨水酸化往往特別嚴重。