"The last 40 years have seen wide variations in estimates of fossil fuel resources and reserves in the world, and in individual countries. Interest was triggered in part by Malthusian concerns about population growth, although many of the works were and continue to be misquoted and misinterpreted. Others (M.K. Hubbert, Colin Campbell) have viewed fossil fuels as a fixed resource, independent of technology. The spectre of massive fuels shortages has faded in recent years with development of…