That's a question investigators are exploring in the wake of the deadly derailment in Philadelphia.
Rescuers find three bodies right by the wreckage of a U.S. Marine helicopter that disappeared while on a relief mission in the earthquake-hit country; six Marines and two Nepalese soldiers were on board.
B.B. King, whose scorching guitar licks and heartfelt vocals made him the idol of generations of musicians and fans, dies at 89.
More than 800 migrants land on the shores of Indonesia and Thailand after being adrift at sea for weeks, despite Southeast Asian countries who say boat people are not welcome.
The office of President Pierre Nkurunziza announces he's back in the country, a day after fighting between loyalist troops and a general seeking to overthrow him.
But the president's claim of winning support from Gulf nations for his nuclear diplomacy with Tehran appears far from certain.
Johnny Depp's Yorkshire terriers are preparing to flee Australia for the U.S. after an official threatened to euthanize them because they were allegedly sneaked into the country.
Google's pod-like two-seater needs no gas pedal or steering wheel and will make its debut on public roads this summer.
Under a new law, no one 18 or younger can buy an Android smartphone without installing applications that block users from visiting porn sites, or downloading content deemed harmful.
The NFL commissioner will hear the New England quarterback's appeal of his four-game suspension over "deflategate," despite union objection.