Retrograde Axonal Transport? Virus Specificity? Olfactory Nerve? If you're unfamiliar with these terms, you may want to hit the virology books - because that's exactly how the world is going to devolve into zombie chaos, according to AsapSCIENCE.
Are people going to die and come back to life? Probably not. But according to the video, a targeted virus that affected the right parts of the brain could turn living humans into zombie-like walkers. Important stuff, considering it's Halloween week.
On the plus side, these hypothetical zombies wouldn't pose quite the risk of traditional zombies. You wouldn't have to shoot them in the head - any old close-range shotgun blast would do.[via Geekosystem]