We’ve all been there. You show up at a beach, and there’s a colored flag, sometimes more than one, fluttering in the wind. The lifeguards put it there for a reason, but what does it mean? Surfers are ...
Red flags are for danger; do not enter, and stay far away from whatever the red flag signals. Green means Go!, it's all good, and the course ahead is clear. Yellow flags are trickier. Yellow flags are ...
When I first saw the finalists for the new state flag designs what immediately popped into my head was “signal flags.” A signal flag is used for long distance communication, and they are deliberately ...
This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...