TomT
Well-known member
"A new study estimates that dairy farms outside Los Angeles contribute at least as much haze-causing ammonia as automobiles."
http://arstechnica.com/science/news/2012/05/la-smog-more-cows-than-cars.ars" onclick="window.open(this.href);return false;
http://arstechnica.com/science/news/2012/05/la-smog-more-cows-than-cars.ars" onclick="window.open(this.href);return false;