Now, econophysicists Didier Sornette of ETH Zurich, Switzerland, and Wei-Xing Zhou of the East China University of Science and Technology, together with Ryan Woodard of ETH Zurich, claim that speculation must have driven some of the escalation in oil prices. They have found evidence for a “bubble” — an indicator of speculation — in prices since 2003, when the cost of an oil barrel was four times lower than it is today.
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klaus
2008-06-25 04:00
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http://physicsworld.com/cws/article/news/34718;jsessionid=C4D2B47E8253B8B556933D9AAF7452EC
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