It is well known that oil can form from buried animal matter, and that coal (which is buried vegetation) is in some instances being turned into oil underground. For some time now, a number of researchers have speculated that oil can also form from non-living sources, such as methane from deep in the earth. E.g. Cornell University’s Dr Thomas Gold (1920–2004) argued that oil is a “renewable primordial soup continually manufactured by the earth under ultrahot conditions and tremendous pressures. As this substance migrates toward the surface, it is attacked by bacteria, making it appear to have an organic origin dating back to the dinosaurs.”