Wgtd's The Morning Show With Greg Berg

This 2007 conversation is with David Standish, the author of a fascinating book titled "Hollow Earth:  The Long and Curious History of Imagining Strange Lands, Fantastical Creatures, Advanced Civilizations, and Marvelous Machines Below the Earth's Surface."    The book examines the many and various ways in which human beings through the generations have been drawn to the notion that our planet is actually hollow, and that its central cavity holds all kinds of wonders - and perhaps terrors as well.