When Arthur was selected as the Republican party’s vice presidential nominee in 1880, questions arose about whether he had been born in the United States and consequently whether he was eligible to be vice president at all.
In 1959, nine students ventured into the Ural mountains for a ski hiking trip, and never returned. While much speculation has swirled for more than half a century, no one knows for certain what caused them to abandon their camp to die in the cold.
Despite all the publicity surrounding the shooting of John F. Kennedy, the identity of one witness has remained elusive for decades. Beverly Oliver has claimed to be the "babushka lady," but there's still no concrete evidence to prove her assertion.
The Mayan empire produced a unique calendar that's still followed in parts of the world today. Curiously, this calendar predicts a monumental, world-wide change on December 21st, 2012. Learn more about 2012 in this podcast from HowStuffWorks.