AT&T faces possible union walkout.
Ally promotes financial literacy.
Audi, BMW and Mercedes-Benz reap luxury-sales gains in China.
Burger King plans to go public again in surprise move, selling $1.4 billion stake.
Coca-Cola remains UK's top grocery brand.
Delta counters industry gloom with late-March surge.
Facebook countersues Yahoo in patent spat.
Fisker debuts new plug-in as manufacturing plans hang in doubt.
Groupon hit with shareholder suit.
"Kony 2012" sequel released this week.
Kraft reveals food business numbers.
MolsonCoors fights bevy of smaller competitors by getting bigger in StarBev deal.
NBC apologizes for editing of transcript in Martin-Zimmerman case.
News Corp. sees James Murdoch resign from BSkyB.
Nissan outlines ambitious sales goals, debuts Taxi of Tomorrow at New York Auto Show.
Nokia's Lumia 900 debuts to positive reviews.
P&G expands games-led marketing.
P.F. Chang's debuts Pei Wei Asian Market.
Pfizer launches cost-cutting bid.
Samsung pushes into mobile ads in more-direct competition with Apple and Google.
Time Inc.-backed Next Media magazine tablet newsstand expands.
Total readies to tackle North Sea oil leak.
US Airways pushes merger with American Airlines.
Yahoo sets to begin long-awaited layoffs while Facebook fires back at company in long-running patent case.
YouTube strikes movie distribution deal with Paramount.