If this is true, it could be revolutionary.

Fossils From Animals And Plants Are Not Necessary For Crude Oil And Natural Gas, Swedish Researchers Find

ScienceDaily (2009-09-12) — Researchers in Sweden have managed to prove that fossils from animals and plants are not necessary for crude oil and natural gas to be generated. The findings are revolutionary since this means, on the one hand, that it will be much easier to find these sources of energy and, on the other hand, that they can be found all over the globe. [Link]

Anton Kolesnikov, Vladimir G. Kutcherov, Alexander F. Goncharov. Methane-derived hydrocarbons produced under upper-mantle conditions. Nature Geoscience, 2009; 2 (8): 566 DOI: 10.1038/ngeo591