If you've ever used an escalator at a shopping mall, an airport, or some other large building, you likely saw the brushes on the side. Here's what they do.

The BriefTwo people with an extensive background in escalators said they believe the video released by MARTA shows the ...

With a rise of 106 feet and a length along the diagonal of 212 feet, it's the second longest escalator in the Western Hemisphere, according to the Washington Metro Area Transit Authority (WMATA ...