For centuries, people across the world have had a fascination with monsters and strange creatures. They marvel at the tales and legends of the Bigfoot of the Pacific Northwest; of the Abominable Snowman of the Himalayas; of the infamous and diabolical Moth-Man of West Virginia; of fire-breathing dragons; and of those dark denizens of the deep: lake monsters and sea serpents. But do such creatures really exist? Can it be true that our planet is...