haha, no it doesn't have to do with flatulence, if that's what you're thinking.

To me it symbolizes our (humankind's) almost hopeless dependence on fossil fuels. I figured I'd just put up a methane molecule rather than one of the more complex hydrocarbon chains (which probably wouldn't fit, and nobody would recognize anyway).

And yes, I know methane can be derived from "renewable" sources. So maybe there's hope after all....

And now we return to our regularly scheduled Mesa bashing....