In Part I, you broke a simple cipher. Now try creating a more complex cipher. Cut out the NOVA Decoder Ring and NOVA Cipher Code Ring and the window marked INDEX. You are now going to put this simple ...

Consider for a moment the possibility that the skyjacker known as D.B. Cooper survived his perilous, 10,000-foot-high leap from a Boeing 727 and escaped into the rainy, wind-whipped night. He'd surely ...

A newly invented cipher may shed light on how the mysterious Voynich manuscript was made in medieval times.

A researcher has developed a cipher that might provide insights into how medieval scribes produced the Voynich Manuscript’s unreadable writing. Created in the early 15th century, and often called the ...