The nation’s airlines are scrutinizing every step of their operations, searching for new ways they can cut their fuel bills.

XTO Energy’s acquisition of Hunt Petroleum, announced Tuesday, adds fuel to the fire of a feud embroiling the Texas dynasty founded by the legendary oilman H. L. Hunt.

The nation’s airlines are scrutinizing every step of their operations, searching for new ways they can cut their fuel bills.

Mr. Paulson said Tuesday that the United States-China relationship is “growing in a positive direction,” but he said he would press during talks next week for a more open Chinese economy.

The Treasury secretary said Tuesday that during bilateral talks next week he would press for a more open Chinese economy.

The Treasury secretary said Tuesday that during bilateral talks next week he would press for a more open Chinese economy.

The European Union’s competition commissioner recommended that businesses and governments use software based on open standards.

Record oil prices and shrinking subsidies in some emerging countries will affect global demand, a leading energy forecaster said Tuesday.

In recent appearances, the presidential candidates have offered sharply contrasting remedies for the country’s ailing economy.

The billionaire financier said Tuesday that he would increase his stake after stockholders offered to sell him nearly half of the automaker’s outstanding shares.