We generate a few orders of magnitude less methane per person/animal than mules and asses, but there are a lot more of us. All options have to be on the table a

We generate a few orders of magnitude less methane per person/animal than mules and asses, but there are a lot more of us. All options have to be on the table and once we have gotten rid of all the low hanging fruit, the choices get trickier and trickier.