Zombies are the stuff of nightmares, books, movies and television shows. Try as we may, says the Huffington Post, it's almost impossible to kill them -- the zombies, that is.
The idea that humans can be transformed into mindless, cannibalistic monsters isn't so far-fetched, according to current research in which scientists have discovered pathogens that can turn even insects into the walking dead.
"We may already be in the midst of a growing zombie apocalypse. What is a zombie? A zombie is a creature that's controlled outside of its own mind and really not controlled by itself, as if under the power of some other force," Morgan Freeman, host of Science Channel's "Through the Wormhole" series, told The Huffington Post.
The latest episode of "Wormhole" examines how new strains of viruses attack humans every day and explores the odds against surviving a zombie virus outbreak.
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