Behind Arrowhead Stadium in Kansas City Missouri is a little woods. I think it's still there. I once lived near the stadium and spent many hours walking that little woods with my sons.
In that little woods somehow spared from the giant parking lots of twin stadiums was a beautiful little stream filled with tiny fish. Our dog Sonny would drink from the little stream on our walks through the woods.
Sundays the boys, the dog and I would always walk in that woods. One Sunday we found ourselves in that woods and Sonny ran to the stream to get a drink. Sonny stopped on small hill before he got to the stream and froze like a statue. The three of us reached the top of the hill and looked down on the stream. All the tiny fish were dead in the stream. A film of gas from the run off of a Monster Truck show in one of the stadiums had killed the stream.
We never walked in that woods again.