Two things. First, if it weren't for cities the demand for that many dairy cows wouldn't exist. Second, that study is just comparing manure production. Cities p

Two things. First, if it weren't for cities the demand for that many dairy cows wouldn't exist. Second, that study is just comparing manure production. Cities produce a great deal of other waste that cows don't. Edit: Yes, just pointing out that people rightly look at cities because they are the driving force so any solution needs to consider that. I don't have a particular solution in mind, but I do hope if one is necessary it optimizes for personal freedom as well as sustainability. I lack the expertise to be specific, but making it economical to capture waste and runoff via tax credits or something might be a possibility. However, I know enough to know this isn't an issue that's going to be solved by me.