Belching cows

You know, I grew up in a small farming community in Central Minnesota.
The town was surrounded by many dairy farms, at least a thousand cattle, maybe more.
But we still had winters with feet of snow, and bitter cold.
I didn't realize that cows contributed to "global warming ".
(Maybe our cows were more polite, and didn't belch in public like some Swedish cows.)

Here's the story:

http://www.foxnews.com/story/0,2933,324446,00.html