WASHINGTON (AP) - An envelope addressed to Sen. Roger Wicker of Mississippi tested positive Tuesday for ricin, a potentially fatal poison, authorities said, heightening concerns about terrorism a day after a bombing killed three and left more than 170 injured at the Boston Marathon.
NEW YORK (AP) - Fox has pulled from websites a recent episode of "Family Guy" that depicts mass deaths at the Boston Marathon, and has no immediate plans to air it again.
LOS ANGELES (AP) - Frank Bank, who played oafish troublemaker Lumpy on the sitcom "Leave It to Beaver," has died. He was 71.
DALLAS (AP) - American Airlines grounded flights across the country Tuesday because of an outage of its main reservations system. Thousands of passengers were stranded at airports and on airplanes.
BOSTON (AP) - Federal agents zeroed in Tuesday on how the Boston Marathon bombing was carried out - with kitchen pressure cookers packed with explosives, nails and other lethal shrapnel - but said they still didn't know who did it and why.
GUANTANAMO BAY NAVAL BASE, Cuba (AP) - The top medical official at the Guantanamo Bay prison says five detainees were injured in the weekend clash with guards.
WASHINGTON (AP) - The Supreme Court is trying to sort out a wrenching adoption case involving a Native American child, a biological father who first renounced any interest in her and adoptive parents who were eventually ordered to hand her over to the father.
CHICAGO (AP) - Far-flung family members, co-workers and friends frantically used social media, cellphones and even a "people finder" website Monday to try to learn the fate of participants and spectators at the Boston Marathon, where three people were killed and dozens injured after a pair of bombs exploded near the finish line of one of the world's great races.
BOSTON (AP) - Massachusetts Gov. Deval Patrick says no unexploded bombs were found at the Boston Marathon. He says the only explosives were the ones that went off Monday.
MIAMI (AP) - Lined up in front of their dugouts, all wearing No. 42 on Jackie Robinson Day, the Washington Nationals and Miami Marlins stood for a moment of silence to honor bombing victims at the Boston Marathon.
OINT BASE ELMENDORF-RICHARDSON, Alaska (AP) - An Alaska-based military policeman will serve 16 years in prison and will be dishonorably discharged for selling military secrets to a Russian agent, who was an undercover FBI agent, a military panel decided Monday.
LONDON (AP) - With more than 30 marathons being held this weekend alone and big events on the horizon, officials around the world are boosting security efforts in the wake of the fatal bomb blasts that shook Boston's race.
BOSTON (AP) - FBI agents searched a suburban Boston apartment overnight and appealed to the public for amateur video and photos that might yield clues to who carried out the Boston Marathon bombing, while a doctor treating the wounded said one of the victims was maimed by what looked like ball bearings or BBs.
PYONGYANG, North Korea (AP) - North Korea quietly marked a second day of celebrations for its first leader's birthday and issued prickly new rhetoric Tuesday threatening retaliation for what it sees as provocations by South Korea and the United States, who have been watching closely for signs the North may go ahead with a suspected medium-range missile launch.
EL CAJON, Calif. (AP) - A San Diego County man has pleaded guilty to killing his 94-year-old neighbor with a hammer as she slept.
ARLINGTON, Wash. (AP) - A county medical examiner has increased the death toll in the Washington state mudslide to 29.
ATLANTA (AP) - Archbishop Wilton Gregory seems to have gotten the pope's message about modest living.
SANTIAGO, Chile (AP) - Chile's interior minister says the death toll has risen to five from a powerful magnitude-8.2 earthquake that struck off northern Chile hours ago. The quake forced evacuations along the country's entire Pacific coast for fear of tsunamis.
KUALA LUMPUR, Malaysia (AP) - An aviation industry group is creating a task force to make recommendations this year for continuously tracking commercial airliners because "we cannot let another aircraft simply vanish" like Malaysia Airlines Flight 370.
WASHINGTON (AP) - The fix for a faulty ignition switch linked to 13 traffic deaths would have cost just 57 cents, members of Congress said Tuesday as they demanded answers from General Motors' new CEO on why the automaker took 10 years to recall cars with the defect.
WASHINGTON (AP) - It's not too late to get covered. A few routes remain open for those who missed the health care law's big enrollment deadline.
NEW YORK (AP) - Unlike some channels, Animal Planet trades on a message beyond "Watch us."
NEW YORK (AP) - In every region of America, white and Asian children are far better positioned for success than black, Latino and American Indian children, according to a new report appealing for urgent action to bridge this racial gap.
LOS ANGELES (AP) - A former nursing assistant at Cedars-Sinai Medical Center is under investigation after two women said they were sexually assaulted while being treated at the Los Angeles hospital, police said.
SAN JOSE, Calif. (AP) - Jury selection promised to be a challenge for the world's leading smartphone makers as they continued their patent fight in federal court on Tuesday.
WASHINGTON (AP) - Calling Caterpillar Inc., a member of the "corporate profit-shifting club," Sen. Carl Levin accused the manufacturing giant Tuesday of employing an aggressive tax strategy to avoid paying billions of dollars in U.S. taxes.
KUALA LUMPUR, Malaysia (AP) - It may mean little to investigators that the last words air traffic controllers heard from the lost jetliner were "Good night, Malaysian three-seven-zero," rather than "All right, good night." But to Malaysian officials whose credibility has been questioned almost from the beginning, it means a great deal.
BRUSSELS (AP) - Facing their biggest security challenge in years, NATO foreign ministers discussed how to react to Russia's annexation of Crimea and what measures to take reassure the alliance's rattled eastern members in the face of a newly assertive Russia.
WASHINGTON (AP) - In a flood of last-minute sign-ups, hundreds of thousands of Americans rushed to apply for health insurance Monday, but deadline day for President Barack Obama's overhaul brought long, frustrating waits and a new spate of website ills.
LOS ANGELES (AP) - Two words - surfboards and Hobie - were all but synonymous in the early 1960s, when teenagers who saw movies such as "Gidget" and "Beach Party" rushed to the shores of Southern California to try a mesmerizing new water sport.