How long will the world’s oil last?

Since oil production peaked in the United States in 1970, a growing number of geologists, economists and industry analysts have been pondering the question of just how long worldwide supplies will keep up with growing demand. And some are predicting that global production may peak as soon as next year.

New oil proves elusive, and alarm bells ring

Western oil companies are running out of likely places to look, and significant finds are growing rarer. With the most accessible areas either already picked clean or kept off limits for political reasons, exploration teams are having to push into harsher, more remote and less promising territory, where the costs and risks are high.