A nine-digit number typed at the bottom of a letter believed to be sent by the infamous hijacker D.B. Cooper confirms the letter could have come from only one person, according to a cold-case ...

You know how sometimes you see those videos where people are asked to name countries starting with a certain letter, and they totally blank? It's tougher than it looks, right? Most of us can name the ...

Five-letter words are a fundamental part of the English language, forming the building blocks of both everyday conversation and complex writing. They are particularly popular in many word puzzles and ...