BY Ron LieberWed Dec 19, 2007 at 8:38 AM
At some point, a problem gets so big that it represents an entrepreneurial opportunity. So it is with the headache-filled world of air travel. In a new book, James Fallows chronicles two exciting -- and long-shot -- efforts to build small planes that would challenge the air-traffic status quo. Is Boeing about to meet the iMac of flight?READ»