[JohnBovenmyer]

Essentially gravity plus rocks makes methane. It may well make some more complicated hydrocarbons. And it probably makes them world wide at the appropriate depth. And some of them semi-randomly work their way to harvestable depths. This is all to the good, but it doesn't tell us how much is made annually at those depths and how much of that each year reaches harvestable depths in commercially useful quantities. This is worth further research, but don't count it as the solution to the energy problem until at least enough is known to convert it to an engineering problem. Science does know where a nearly infinite supply of methane is gravitationally blocked from us... at several sites in the out solar system. The deep earth sources are smaller and may be harder to tap.

[arthurus]

Actually it is not that important to current and evolving energy needs because of the available Tar Sands and Shale oil. And as for methane, there are huge amounts just lying about on the deep ocean floorin those little ice nodules, enough that libs are already worrying that efforts to tap that source will Destroy Us All or that Global Warming will melt the nodules and flood the atmosphere with methane that will Destroy Us All.