Prof. Whitehead notes a post that says that the claim that meat production generates 51% of greenhouse gas emissions is based on "addled" conclusions.
By the way, why does nobody mention beer (or any adult beverage, for that matter) along with greenhouse gasses? There's a reason they call those little bubbles in beer "carbonation." Plus, yeast produces two byproducts when it noms on fermentable sugars: alcohol (yeast pee, basically) and carbon dioxide (yeast farts).
Makes you wanna go out and knock back a cold one, no?