Add Yahoo as a preferred source to see more of our stories on Google. Airplane passengers were blown away after learning that those ubiquitous "dings" on an airplane are actually a code crew members ...

Choctaw soldiers turned their native language into a secret military code that helped Allied forces during World War I.

What if a secret society of rogues operated in plain sight, using code words to plot elaborate felonies and hoaxes? From the 16th to 19th centuries, Europeans believed exactly that. According to ...