Google and Yahoo! are fuming over revelations that the agency intercepted their users' records.
United States authorities increase scrutiny of the digital currency.
People sending emails to Google's Gmail users have no "reasonable expectation" that it will be confidential, says the company in a court filing.
Bankruptcy is seen as the motor city’s last resort and even then its recovery will be difficult.
The US and the European Union start talks to create the world's largest free-trade agreement, amid diplomatic tensions over recent spying revelations.
Boeing has completed the first successful tests of its troubled Dreamliner 787 since the jet was grounded following battery fires.
BP's "every dollar counts" culture led to the fatal Deepwater Horizon disaster in the Gulf of Mexico.
The US vice-presidential candidate has denied he profited from a 2008 meeting with the Federal Reserve chair Ben Bernanke.
McDonald's, the fast food giant that managed to ride out much of the Great Recession, has been bitten by the global slowdown.
Microsoft has launched its own series of tablet computers as the tech giant fights to regain ground lost to Apple's hugely popular iPad.