Cows cause more air pollution in the San Joaquin Valley (that's the big valley that runs from Bakersfield to Sacramento) than cars, trucks or pesticides.
http://www.latimes.com/news/local/la...home-headlines
These noxious organic compounds are produced in the bovine digestive process.
The Air Quality management people are looking into regulating the cow's diet to reduce flatulence.
We should all run out and buy stock in Beano.