More settled science: Meat and Dairy cause 51%, or maybe 18% or something, of Al Gore Warming!

Steak 'n Bake? 51% of Greenhouse Gas Emissions Now Come From Meat & Dairy Industry : TreeHugger

We've long said that cutting meat and dairy out of your diet, or at minimum cutting back deeply on their consumption, is one of the most powerful personal steps you can take towards mitigating climate change. But new analysis from Worldwatch Institute shows that the impact of raising livestock and poultry is much greater than previously thought and actually amounts to approximately 51% of global greenhouse gas emissions:

The FAO's widely-cited 2006 report Livestock's Long Shadow listed annual greenhouse gas emissions from livestock to be 11.8%.
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The Solution = Widespread Adoption of Vegetarian Diets