My environmental posts come from a lot of research into scientific papers. This doesn’t. (I’ll research it later, but if anyone has a clue, I’d love to know about it.)
 I’ve been driving in NYC lately. This doesn’t usually give me blinding headaches. NYC has had ethanol in it’s gas for a long time but now the surrounding areas (that have much cheaper gas) are high in ethanol too. Is it significantly raising emissions?