You're repeating bad information. Cow farts is a red herring — they're ruminates, belching is the problem not farts. And adding seaweed to their diet controls the belching.
Not that that does anything for the deforestation and violence.
Today, from S0, two papers:
South China Post: China scientists warn of global cooling trick up nature’s sleeve
The Global Warming Policy Forum: Against Censorship: The Climate Story Forbes Doesn’t Want You To Read