Amelia Earhart was an aviation pioneer -- the first female to fly solo across the Atlantic. In July 1937, she was attempting to fly all the way around the world. But tragically, she disappeared while crossing the Pacific... and has never been seen since.
There have been many theories regarding what became of Amelia. Some say she survived and lived as an island castaway. Found objects -- including a jar of freckle cream -- have been used as circumstantial evidence to support the theory.
Amelia Earhart is just one of many people who vanished without trace. Click through for more unsolved mysterious disappearances.