OIL briefly reached another record on Tuesday May 6th as West Texas Intermediate traded at over $122 a barrel for the first time. Ten years ago a barrel fetched around $15. The feeble dollar, soaring demand and supply constraints have all helped to push up prices by 25% in the past four months alone. And there is little sign of respite for worried governments and consumers. This week Goldman Sachs, a bank, predicted that oil could reach $200 a barrel before the end of the year.

Corbis