Is the age of cheap oil about to come to an end? According to many experts, we are about to reach the point of "peak oil" -- the level at which supply can no longer keep up with demand. This, say the doomsayers, could send economies spinning into turmoil and up-end our comfortable, urban lifestyles. But others claim predictions like this are simply scaremongering. They believe supply will match demand for decades to come. So who's telling the truth? 'Peak Oil' investigates.
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