...fossil methane, dangerous natural gas. This dominates, by orders of magnitude, the world methane supply.
The background methane, which has little industrial use, can be roughly discerned by looking at the Mauna Loa atmospheric observatory methane pages, Annual Increase in Globally-Averaged Atmospheric Methane
Despite much rhetoric to the contrary, the world is not going to run on cow shit, human shit and landfill gas, although it does, at least in a metaphorical sense, run on horseshit.
The unit in the atmosphere as reported at the NOAA Mauna Loa website is parts per billion. While it is the second most important climate forcing gas, the higher concentrations of carbon dioxide are driving climate change.
The point, despite whatever disingenuous "gotchas" anyone would like to throw is that in order to reform methane using solar energy, one would almost certainly require a concentrated source of it, covering huge stretches of land area for the dubious purpose of reducing carbon dioxide only to dump it again.
I fully concede though, that in theory, we could attach lots of rubber tubes to assholes and collect the methane that otherwise ends up in the atmosphere.
Thanks for the quibble which while accurate has nothing to do with the point whatsoever.
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