Up stream pollution.
 

I caught this on the Frybrid forums. Really makes me wonder about all the industrial inputs we have have in our products, and is a great example of why something touted as "Green" may not be. Granted the article is alarmist, evidently, most of the damage was done prior to the 90s, when significant pollution controls were put into place. But I wonder what the pollution per mile is when taking into account all the industrial inputs for any vehicle...

edit-initially linked to comments. :o