Criminal charges were filed on Thursday against four executives who imported toothpaste from China that contained a poison used in some antifreeze. Read more..

By LOUISE STORY and GERALDINE FABRIKANT - The New York Times

Apple is hoping to expand the iPhone’s appeal by luring software developers to create programs for it. Read more..

By LAURIE J. FLYNN - The New York Times

The figures are expected to increase pressure on policy makers and the mortgage industry to move faster to contain losses and help homeowners. Read more..

By VIKAS BAJAJ - The New York Times

The home improvement chain is planning what may be its most ambitious annual spring marketing campaign, which gets under way on Sunday. Read more..

By STUART ELLIOTT - The New York Times

Investors sought absolute safety, even moving away from debt issued by two government-sponsored mortgage lending enterprises. Read more..

By FLOYD NORRIS - The New York Times

Carlyle Capital said it was “considering all available options” after it received further margin calls, prompting analysts to warn that more funds could struggle to meet tighter margin requirements. Read more..

By JULIA WERDIGIER - The New York Times

Renewed anxiety about the availability of bank loans sent shares down sharply on Thursday. Read more..

By MICHAEL M. GRYNBAUM - The New York Times

The F.A.A. proposed a record penalty, $10.2 million, against Southwest Airlines on Thursday because, it said, the carrier had misled officials. Read more..

By MATTHEW L. WALD - The New York Times

Shares of Sallie Mae, the nation’s largest source of student loans, have lost more than half their value since December. Read more..

By MICHAEL J. de la MERCED - The New York Times

When Société Générale moved its $9.7 billion loss from 2008 — when it occurred — to 2007, it created a furor in accounting circles about whether standards can be evenly applied. Read more..

By FLOYD NORRIS - The New York Times