Delta and Northwest Airlines have announced plans to merge, in a deal that will create the world's largest airline. The new airline will keep Delta's name and worldwide headquarters in Atlanta. Labor unions are up in arms over the deal which may result in job losses for pilots and administrative staff.

A wave of bankruptcies is changing the face of shopping malls across the US. Growing numbers of mid-sized retailers have found themselves out of luck as banks tighten the purse strings.

John Coates was working as a trader in New York during the dot-com boom when he came up with a hypothesis: financial decision-making might somehow be related to hormone levels.