Add Yahoo as a preferred source to see more of our stories on Google. Rescue crews search the Potomac River the day after an American Airlines plane collided with a US Army Black Hawk helicopter, ...

Mistakes happen, he theorized, because multiple vulnerabilities in a system align — like the holes in cheese — to create a recipe for disaster. By Michael S ...

Former lawmaker Gary Zhang Xinyu, also ex-MTR Corporation engineer, said on Thursday that the previous day's disruption was very likely caused by noncompliance with maintenance protocols. "The coming ...