If the signals detected deep in the Indian Ocean are truly from the wreckage from Malaysia Airlines Flight 370, they ultimately will close the book on a frustrating long list of false leads in the effort to find the jet. Here are the most prominent moments in which hopes of solving the tragic aviation mystery were dashed:
OVERLAND PARK, Kan. (AP) - A gunman opened fire outside of a Jewish community center on Sunday, killing a doctor and his teenage grandson before heading to a Jewish retirement community a few blocks away and killing someone else, authorities said.
SLOVYANSK, Ukraine (AP) - Ukraine is deploying troops in a "large-scale anti-terrorist operation" to resist attacks by armed pro-Russian forces, Ukraine's President Oleksandr Turchynov said on Sunday in a televised address.
PRETORIA, South Africa (AP) - Prosecutor Gerrie Nel fired another tough question at murder suspect Oscar Pistorius.
VATICAN CITY (AP) - Pope Francis, marking Palm Sunday in a packed St. Peter's Square, ignored his prepared homily and spoke entirely off-the-cuff in a remarkable departure from practice. Later, he continued to stray from the script by hopping off his popemobile to pose for "selfies" with young people and also sipping tea passed to him from the crowd.
WASHINGTON (AP) - As millions of Americans race to meet Tuesday's tax deadline, their chances of getting audited are lower than they have been in years.
RED BLUFF, Calif. (AP) - Federal investigators could not corroborate on Saturday a driver's claim that a FedEx tractor-trailer was already on fire when it careened across a freeway median, sideswiped her car and slammed into a bus carrying high school students, killing 10 people in a fiery wreck.
WASHINGTON (AP) - The world's top finance officials expressed confidence Saturday that the global economy finally has turned the corner to stronger growth. This time, they may be right.
BOSTON (AP) - Boston officials have announced improved public safety measures for the final two miles of the Boston Marathon on April 21, a year after two explosions near the finish line killed three people and wounded more than 260 others.
HONOLULU (AP) - U.S. officials say there is no threat of a tsunami to the coasts of California, Oregon, Washington, Hawaii or Alaska after a magnitude-7.6 earthquake struck in the Pacific Ocean near the Solomon Islands.
LOS ANGELES (AP) - Don't feel bad for Conan O'Brien. Again.
WASHINGTON (AP) - Democratic Rep. Ami Bera has been making a habit lately of bucking his own president and voting with the Republican majority in the House as it moves to amend or overturn parts of the national health care law.
SANTA BARBARA, Calif. (AP) - With streets still littered in glass and garbage cans overflowing with red cups and bottles, University of California, Santa Barbara students were trying to shake off a lingering hangover from an annual spring party morphed into a raucous and violent blowout.
Outkast reunited onstage after a near decadelong hiatus with a jam-packed set at the Coachella music festival, their first of many performances planned this year.
WASHINGTON (AP) - A federal appeals court on Friday upheld a regulatory safety finding against SeaWorld in the drowning of a trainer who was pulled under by a killer whale at the theme park.
LOS ANGELES (AP) - Jodie Foster is a married woman.
LATHROP, Calif. (AP) - Electric car maker Tesla Motors is expanding its footprint in California.
WASHINGTON (AP) - The Supreme Court on Wednesday rejected a plea to make it easier for victims of child pornography to collect money from people who view their images online, throwing out a nearly $3.4 million judgment in favor of a woman whose childhood rape has been widely seen on the Internet. Two dissenting justices said Congress should change the law to benefit victims.
SACRAMENTO (AP) - State senators were scheduled to receive a refresher course in ethics on Wednesday, the fallout from a series of legal cases involving Democratic lawmakers this year.
LOS ANGELES (AP) - The mother of a 17-year-old honors student who was among 10 people killed in a fiery Northern California bus crash sued FedEx on Tuesday, alleging that its trucks have a history of catching fire.
RICHMOND, Va. (AP) - Smokers are increasingly turning to battery-powered electronic cigarettes to get their nicotine fix. They're about to find out what federal regulators have to say about the popular devices.