Add Yahoo as a preferred source to see more of our stories on Google. 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 ...

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 ...

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 ...