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Diesel continued to soar last week, jumping 22.6 cents to put the national average retail price at an unprecedented $4.723 a gallon, according to the Department of Energy.

UPS Inc. said Wednesday it is moving its primary intra-Asia air hub to southern China, from the Philippines, to save money and reduce transit times across Asia.

Retail fuel prices skyrocketed again last week, with diesel jumping 18.2 cents a gallon to a national average of $4.331, the biggest one-week increase since October 2005 and more than 15 cents more than the last record.

American Trucking Associations launched a major initiative to meet the industry’s growing fuel-price crisis, supporting for the first time national truck fuel-economy standards.

An American Trucking Associations official asked a congressional panel to set a national speed limit of 65 miles per hour, as part of a series of steps ATA said would support the trucking industry’s efforts to reduce fuel consumption and address the escalating cost of diesel.

U.S. retail diesel prices set a record for the third consecutive week as the national average rose 3.4 cents a gallon to $4.177, according to data from the Department of Energy.

Eastern freight railroad Norfolk Southern Corp. said its first-quarter profit rose 2%, as higher revenue per shipment offset an overall drop in traffic and record fuel prices.