On Sun, 24 May 2009 06:47:08 -0400, John H
wrote:

"A study commissioned by the National Institute of Livestock and
Grassland Science in Tsukuba, Japan, and published in the Animal
Science Journal, found that producing 2.2 pounds of beef generates
more carbon dioxide than an average car does every 160 miles."

Where do you think the carbon comes from? The crops pulled it out of
the atmosphere the year before. Net effect, close to zero. There is
some fossil carbon in the natural gas used to make nitrogen
fertilizer, but not that much per pound of beef.

Casady