Tomorrow's world of "The Hunger Games" doesn't just showcase the reality TV spectacle of teenagers battling to the death — it also features futuristic hovercraft, force fields and bioengineered "Mutt" creatures. Those technological marvels represent tools of oppression for the dystopian nation of Panem, where the Capitol elite live in high-tech luxury supported by the old-fashioned sweat of district coal miners, farm hands and factory workers. But the popularity of the "Hunger Games" series has...