Very interesting, but I'm having a hard time making sense of the numbers - not an expert. All the figures stated are relative, and not always relative to each other. What I would like to know: what percentage of the combined global warming potential (or CO2 equivalent) of all greenhouse gases can be attributed to livestock? Not in % of methane, % of CO2, % compared to transit pollution, etc.
I did try to find that information in the source you linked, but failed. I also downloaded the "full report" from 2006, which is inexplicably cut off just after the executive summary. For example: it's interesting that N2O is 296 times as potent a greenhous gas as CO2, but what if its percentage of overall emissions was just 0.01%? (That number came out of my derriere, but since the actual report is unavailable, who knows)
I'm not a policy maker, but I like to know what I'm talking about. The related news items are all quoting each other, or the executive summary from the FOA report. They're not making this easy for me.
CJ