Buried in this publication by the Professional Engineers of Ontario (APEO) is a short blurb about a May 2000 Popular Science article. The latter article predicts significant exhaustion of worldwide oil reserves sometime in the next 10-15 years, and the total lack of a plan to do anything about it. It also quotes as a scientific reference the Oil & Gas Journal. http://www.peo.on.ca/publications/OD2000Link.pdf My own calculations indicate shortages in the same period caused by exponentially increasing demand from Asia-Pacific countries, and the simultaneous exhaustion of reserves in North America & Europe. By 2015 almost all the world's oil supply will come from one place: Saudi Arabia. They won't be able to support such extraordinary demand.