Even if there was a zombie outbreak, it wouldn't last long.
Let's face it, zombies are walking meat-bags, the difference between living humans and undead zombies is that humans still have intelligence. I mean, have you ever watched a zombie movie recently? No zombie jumps out of the way of a gun, they just stay in the line of fire.
So now let's imagine that an outbreak of slow, stupid and rotting zombies has just started. Now imagine that they've started in a particularly warm area. The zombies wouldn't last a day in a hot climate, they'd just keep rotting and fall apart.
Same goes for cold climate. Have you heard of something called "freezer burn"? Because both humans and zombies' innards are floating in water, there would be some serious ice crystals sticking out of these zombies. They'd just freeze over, ready to be attacked.
Let me ask another question: Have you ever left some food outside, maybe for an hour, a few hours, or even a day perhaps? Did an animal get to that food? Maybe ants, raccoons, squirrels, chipmunks, skunks, deer, just to name a few. If you have a hunk of rotting meat just waltzing around, some animal's going to get a piece of it LONG before any human even saw it. Their numbers would be whittled down rapidly thanks to our predatory friends.
tl;dr: No, it will never happen.
Last edited by BlackRanger; Oct 29, 2011 at 08:58 PM.