A day ago, I remembered reading something about toxic rain nearly.. three years ago? Maybe four.
Apparently the theory is that the world's pollution will cause the natural cycle of rain to turn toxic, rather than just normal moisture, the theory ranges from toxic rain that gradually effects your health to acid rain.
I can't remember where I read, or even heard this, but I do remember that I've seen or heard the theory somewhere before, I thought that I would bring it up before someone else discovered it and became paranoid over it.
Sorry that I don't have a source, like I said, it was three or four years ago.
Wie Sie säen, so sollst du ernten.