On 5 Oct 2005 10:54:45 -0700, "bpnjensen" wrote:

Now that cars burn cleaner, cows are the #1 cause of air pollution in
the Central Valley of California.

To quote you:
"That's the craziest thing I've read in a long time"

CA Central Valley has a remarkable variety of pollution sources, from
dust to ag burning to cows to cars. Each produces a different mixture
of emissions - some more particulates, some more ozone precursors. The
Central Valley has such bad air quality in summer (due to emissions and
climatological factors) that *any* reduction in *any* pollutant is
desirable.

Bruce Jensen

''Dairy cows in the San Joaquin Valley, California, produce more
smog-forming gases than cars, according to local air quality
regulators. The region's dairy industry currently includes some 2.5
million cattle''

http://news.nationalgeographic.com/n...llution_2.html