DAEGU, South Korea --A final search of the subway station gutted by fire in Daegu, South Korea has not found any survivors, officials say, raising fears the death toll from the tragedy could rise ...

With 850 miles of track, the New York City Subway is the longest system in the country, and it's a monumental task to keep it anywhere close to fully functional. The MTA, the subway's operator ...

An curved arrow pointing right. Deep below the ground is North Korea's beautiful Pyongyang Metro, a bustling subway system where hundreds of thousands of people make their way to and from work ...

Identifying maintenance needs for subway tracks is a labor-intensive process. Recently, Google teamed with NYC to see if Pixel phones could use their sensors to cheaply spot problem areas.