To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Share Embed Share URL Video File Node URL Embed Code <iframe title="MRC TV video player" width="640" height="360" src="https://www.mrctv.org/embed/103162" allowfullscreen></iframe> Responsive Embed Code Embed Code <iframe title="MRC TV video player" width="640" height="360" src="https://www.mrctv.org/embed/103162" allowfullscreen></iframe> WHDH, CAMBRIDGE, Mass. -- A teenager fell nearly 20 feet from an escalator at the Alewife MBTA station.