The Truth Behind Zombies

National Geographic examines the truth behind zombies. It looks at zombies in films and media and examines how quickly epidemics can spread in the world. It examines some of the dangers that would arise if a zombie virus broke out in the real world and looks at some of the types of brain damage that cause zombie like behavior. It also considers zombies in voodoo and looks at a case in Haiti where a man thought dead returned claiming to have become a zombie.