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At the mantle-crust interface, roughly 20,000 feet beneath the surface, rapidly rising streams of compressed methane-based gasses hit pockets of high temperature causing the condensation of heavier hydrocarbons. The product of this condensation is commonly known as crude oil
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ok, maybe there is plenty of methane underground
but
problems - high temperature = condensation? not really. Maybe they mean high pressure, or low temperature?
condensation of heavier hydrocarbons? where from? we started with methane, where did they appear from?
you can presumably make long-chain hydrocarbons by polymerising (i.e. getting the molecules to link up) methane - that's more or less how most plastics are made. So I'm not discounting the theory, but their arguments in favour aren't worth much. From my limited knowledge of chemistry that is
in the 2nd quote, i think they keep saying nuclear when they mean radioactive. It's true radioactive substances are released when you burn coal, but nearly everything is radioactive to a certain extent.
so interesting articles but let down by their arguments a bit I think