Oil prices tumbled for a third day in a row. Light crude for October delivery settled at $45.21 a barrel on Tuesday, but some analysts expect oil prices to stay in the mid-$40 range as long as tensions remain high in Iraq.
Before the recent retreat, prices had charged higher for weeks.
Northwest Airlines plans to charge more for domestic tickets not booked through the company's Web sites. If you call Northwest's reservation line to buy a ticket, you'll now pay $5 extra and a $10 fee if you purchase your seat at an airport ticket counter.
The company expects the changes will save them about $70 million a year.
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