In this week's paranormal news and views, there was an article about what really happened during "the Philadephia Experiment." There have numerous theories and rumors about the alleged experiment, some more credible than others, but as I state in my article "5 Mysteries That Will Never Be Solved", the incident is so mired in rumor and possibly classified documents that we might never know what really happened -- if anything.
In this article I cite four other historical events or modern mysteries that also fit into this category, including how the Egyptian pyramids were built, the Roswell UFO case, crop circles, and what happens to us after we die. What would you add to this list? What mysteries or unsolved cases do you think we will never find definitive answers for? You can post your suggestions in the Comments link below. Perhaps I'll add your suggestion to the article!