From green-skinned siblings who appeared in a medieval village speaking an unknown language, to children who vanished and reappeared under impossible circumstances, history is filled with baffling ...

Why have so many people inexplicably vanished in what has become known as the Alaska Triangle? Steven Rinella investigates in ...

Ask students to discuss in small groups or do a free-write in response to the question: What is one of the great unsolved mysteries of history? Why do you think people remain so interested in this ...

Ask students to discuss in small groups or do a free-write in response to the question: What is one of the great unsolved mysteries of history? Why do you think people remain so interested in this ...