Ethanol Question!!

[RABBITFISH]

I know this is probably going to sound stupid, but how do you tell if the gas has ethanol in it? At all of the stations here in my area, I check all over the pumps looking for some kind of sign if the gas has ethanol, and only found one station that had a little yellow sticker on one of the pumps that said "may contain up to % ethanol additive" I have not seen this label on any other pumps.....If I ask the attendant inside, they have no clue what I'm talking about...What's ehtanol?....We only have gas..........
Is it just in my area or is it like this in other areas??