Zombies Highest in Popularity When People Unhappiest

According to a professor that studies zombies

Zombies seem to be everywhere these days.

In the popular TV series "The Walking Dead," humans struggle to escape from a pack of zombies hungry for flesh. Prank alerts have warned of a zombie apocalypse on radio stations in a handful of states. And across the country, zombie wannabes in tattered clothes occasionally fill local parks, gurgling moans of the undead.