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

October 3, 2002 – Lori Ann Lewis-Rivera, 25, of Silver Spring is shot dead at a Shell gas station in Kensington. October 3, 2002 – In the only killing in Washington, DC and the first one to ...

As National Geographic reimagines its iconic headquarters for the 21st century, here’s a look back at its history as a base for both Cold War spies and the Society’s own Explorers.