Crude oil inventories are at their highest levels in almost 20 years. Demand has fallen to a ten-year low. So why are gasoline prices going up as Memorial Day approaches? Since mid-January, crude oil prices have gone up more than 70 percent. Since last month, the price of gasoline has risen 28¢ to a national average of $2.33. That's bad news, but not for the usual reasons. Kevin Hall writes about economics for the McClatchy Newspapers.
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