(CNN) — Here’s some information about Washington, DC’s subway system, generally called the “Metro.” The Washington Metropolitan Area Transit Authority operates Metrorail, the third largest heavy rail ...

Following is a transcript of the video. In the inscription of Abraham Lincoln's second inaugural address, the word "future" started with an E instead of an F. The bottom part of the E was filled in to ...

Here’s some information about Washington, DC’s subway system, generally called the “Metro.” The Washington Metropolitan Area Transit Authority operates Metrorail, the third largest heavy rail system ...