Authorities declined to comment on a suspect or any other aspect of the investigation, but a senator says the person under suspicion writes a lot of letters to Senate members.
The top aviation regulator said he expects to decide "very soon" whether to approve Boeing's redesigned 787 Dreamliner battery system, potentially ending a three-month ban on flights by the high-tech jet.
American Airlines is trying to recover from a poorly timed public-relations nightmare after a computer meltdown forced the cancellation of most of its flights.
Applications for U.S. home mortgages rose last week for the second week in a row, helped by renewed demand for refinancing, new data from an industry group showed.
Tesco wrote down the value of its global operations by $3.5 billion and announced plans to exit the U.S., after a year in which profit fell for the first time in two decades.
Apple may have surged ahead with tablet sales, but the competition is heating up in China, where ultra-cheap tablets are giving consumers more options.
Mark Zandi, who's reportedly the front-runner to become the White House's next housing czar, said there were benefits to mortgage writedowns for underwater homeowners.
The bombs that exploded at the Boston Marathon were likely heavy, carried to the scene in dark nylon bags and packed with shrapnel to make them more lethal.
Obama signed into law a provision repealing the requirement that senior government officials post their stock trades on line.
An envelope sent to Republican Senator Roger Wicker of Mississippi tested positive for ricin, Senator Dick Durbin told reporters after a group of lawmakers were briefed by the FBI.
Intel reported quarterly earnings Tuesday that came in just short of expectations, while revenue hit analysts' target.
The search giant's first-quarter earnings topped forecasts, but revenue fell short and shares fell after-hours.
Facebook is trying to take over Apple devices with its new software.
U.S. builders ratcheted up construction, but the growth was entirely in apartment buildings. Multifamily housing starts are now running much faster than the 10-year average.
Coca-Cola reported first-quarter earnings on Wednesday that were boosted by a rise in sales in Europe and emerging markets.
Top Fed policy doves, with opposing economic views, agreed the job market has not yet improved enough to merit cuts to the central bank's bond-buying program.
U.S. industrial production rose more than expected in March, but the increase was due to a surge in demand for utilities during a cold snap, while output actually declined at the nation's factories.
Goldman Sachs reported first-quarter earnings on Wednesday that topped Wall Street's expectations, helped by higher revenue in its investment banking arm.
Retailer Target warned first-quarter earnings would miss expectations, after weaker-than-expected sales of seasonal and weather-sensitive items.
A large area of downtown Boston was cordoned off by police on Tuesday as authorities hunted for a suspect in the deadly bombings at the Boston Marathon.