Second-act chief executives bring deep knowledge of their industries and their companies, but may be reluctant to make radical changes. Read more..

By STEVE LOHR and DAMON DARLIN - The New York Times

Gerald Grinstein, head of Delta, discussed the recent takeover battle and Delta’s future. Read more..

By JEFF BAILEY - The New York Times

Motorola is learning a cruel new lesson that a phone’s value reflects not so much what it can do, but whether it is the envy of friends. Read more..

By BRAD STONE - The New York Times

At the age of 70, Carl C. Icahn has gone from being a corporate raider to a “shareholder activist.” Read more..

By JOE NOCERA - The New York Times

The economy expanded faster than expected in the last quarter of 2006 and remains strong. Read more..

By MARK A. STEIN - The New York Times

Silicon Valley’s best and brightest organized a concerted, high-tech effort to find a missing Microsoft researcher. Read more..

By KATIE HAFNER - The New York Times

A new site, Do The Right Thing, allows users to make submissions criticizing industries and companies, which are then voted on by readers. Read more..

By DAN MITCHELL - The New York Times

The slowdown may signal that the economy is shifting down a notch from its unexpectedly robust pace of growth at the end of last year. Read more..

By JEREMY W. PETERS and EDUARDO PORTER - The New York Times

The setbacks included the resignation of a top official and an announcement that talks on a critical trade dispute had failed to resolve differences. Read more..

By STEVEN R. WEISMAN - The New York Times

Vornado Realty Trust is being pressured to sweeten its counteroffer and pay more of it in cash and less in stock. Read more..

By TERRY PRISTIN - The New York Times