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?

The homemade flag carried by Lanphier High School students ... into the “Environmental Action Center,” as a sign on the door announced. Now it was a place where the 24-year-old biology teacher ...

Here is our guide to the referee assistant signals. When the whole of the ball crosses the line, it's time for a throw-in. The assistant referee will hold up the flag in the direction that the team ...

The upside down flag traces its origins to the sea, where sailors flew them as a signal of distress to other maritime ...