Here are additional links that consider connections between animal-based agriculture and global climate change.

The complete United Nations Food and Agriculture Organization report can be downloaded here (7.5 megabyte PDF file).

Livestock's role in climate change and air pollution (from the FAO's 2006 report Livestock's Long Shadow)
www.virtualcentre.org/en/library/key_pub/longshad/a0701e/A0701E03.pdf

EarthSave: A New Global Warming Strategy
http://www.earthsave.org/globalwarming.htm

Another Inconvenient Truth: Meat is a Global Warming Issue
http://www.emagazine.com/view/?3312

Another Inconvenient Truth: In the modern world, it is impossible to reconcile a carnivorous diet with environmental responsibility
http://www.aquarianonline.com/Eco/anotherinconvenienttruth.htm

Warming Up to a New Diet
http://simplevegan.blogspot.com

Diet, Energy and Global Warming
http://geosci.uchicago.edu/~gidon/papers/nutri/nutri.html

ABC News: Meat-Eaters Aiding Global Warming?
http://abcnews.go.com/Technology/TenWays/story?id=2119267&page=1

Greenpeace: On Your Plate
http://www.greenpeace.org/usa/news/green-living-guide/on-your-plate

Fight Global Warming by Going Vegetarian
http://goveg.com/environment-globalwarming.asp

Vegan diets healthier for planet, people than meat diets
http://www-news.uchicago.edu/releases/06/060413.diet.shtml

The SUV in the Pantry
http://www.organicconsumers.org/btc/gasfood112105.cfm

Physics World: Cut Global Warming by Becoming Vegetarian
http://www.physorg.com/news4998.html

Five Food Choices for a Healthy Planet
http://www.veg.ca/issues/enviro-5reasons.html

Eco-Eating: Eating as if the Earth Matters
http://www.brook.com/veg

Vegetarian is the New Prius
http://www.commondreams.org/views07/0120-20.htm