Why are oil prices so high?
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US crude prices on the New York Mercantile Exchange have hit fresh record highs, hitting $49.45 a barrel, up more than 50 percent from the start of the year.
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The price of crude oil surged past an unprecedented $55 per barrel Monday amid continued uncertainty over production, high demand and tight supply globally.
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The price of crude reaches a new high in the US,  driven up by official data showing a decline in heating oil stocks.
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Oil prices reach a fresh high above $98 a barrel but fall back on higher-than-expected US crude supply figures.
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Oil futures prices surged to new heights above $55-abarrel on Friday as concerns about the global supply of heating oil persist ahead of winter in the Northern Hemisphere.
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Oil prices struck a fresh record high above $47 a barrel on Thursday as fresh evidence of demand growth in China and India underlined how rising appetite for oil is straining the world&#39;s supply system.
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Oil prices today hit a new high amid fears over low fuel stocks as winter approaches and renewed concern about the security of supplies.
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Oil prices rose to record highs on  Monday, pushing crude in London above $50 for the first time  and extending a relentless rise that has added around 65  percent to the cost of crude this year.
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ELEANOR HALL: The high price of oil is already threatening global economic growth, but that price could yet be pushed higher by events in Russia.
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Oil prices were forced higher today by an outbreak of violence in Saudi Arabia and concerns that Opec may cut output. The cost of a barrel of light, sweet crude oil climbed
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Oil prices have surged to two-week highs following news that supplies in the US are tightening. In New York on Thursday, the cost of a barrel of oil rose almost $2 to $44.
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WASHINGTON - High oil prices, which have been a factor in virtually all U.S. recessions over the past three decades, are surging again this year...
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Business & money: Motorists set to face higher prices at petrol pumps after cost of oil surges above $79 a barrel.
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World oil prices have shot to record highs as concern grows about even more expensive fuel at the petrol pumps. In London, Brent North Sea crude oil for delivery in November surpassed $50 a barrel for the first time in the contract&#39;s 16-year history.
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Business & money: Nigerian strike and Iran worries add to pressure as cost of crude oil rises to its highest level this year.
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Oil prices surged to a new high of $47 a barrel on Wednesday on evidence from major economies that energy costs are not substantially slowing the economic growth that fuels oil demand.
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Oil prices have raced to new record high levels after oil majors evacuated workers in Nigeria and police clashed with suspected Islamic militants in the Saudi Arabian capital, Riyadh.