by Adam Porter
Predicting the end of the age of oil can be a sticky business. The Association for the Study of Peak Oil and Gas (Aspo), a collection of industry figures, politicians and academics, this week held its annual meeting at the Gulbenkian Museum in Lisbon.
From quiet beginnings three years ago, Aspo is no longer just "bubbling under" in being taken seriously. Delegates had to squeeze past no fewer than 10 documentary crews, a nest of television cameras and a phalanx of reporters just to grab their seat in the packed auditorium.