2008_12_wpix.jpgThe Tribune Company, which owns the Chicago Tribune, LA Times, and Baltimore Sun, as well as the Chicago Cubs and Wrigley Field, has filed for bankruptcy, which Dealbook calls, "the latest — and biggest — sign of duress for the newspaper industry yet." A year ago, real estate developer Sam Zell bought the Tribune Co., but the Wall Street Journal says the Tribune "stayed ahead of its $12 billion in borrowings with the help of asset sales... The company's cash flow may not be enough to cover nearly $1 billion in interest payments due this year, and Tribune owes a $512 million debt payment in June." Tribune sold off Newsday to Cablevision earlier this year, but still owns WPIX/Channel 11.