Well, the Mayan Calendar hasn't exactly predicted stuff like Katrina. You can't really judge something in those terms. It's un-mathematical, and thus loses its evidence.
However, the Mayan Calendar has, in fact, predicted several astronomical events (stuff that actually can be measured). And it's that Calendar that predicted the end of the world to be sometime in December, 2012. And this is how I interpret the possibility of the end of the world:
Now, the idea of galaxies colliding has been thrown around, and the idea of time may screw up this hypothesis, but I'll give it anyway. It's shown that we, the Milky Way, are moving steadily closer to one of our neighbor galaxies, I think it's the Large Magellanic Cloud, or something. Regardless, since the Mayan Calendar has predicted astronomical things, it's possible that the 2012 debate really refers to the point in time where our galaxy collides with our neighbor galaxy. And if that happens, really one of three things can occur:
1.) We go right through each other, sight unseen, and we go back to normal
2.) We get thrown out of orbit by the force it brings, and take a quick trip to the sun, where we will in turn be sizzled like a steak
3.) We are thrown in the opposite direction, out of our galaxy (granted the collision would cause enough force for Earth to be flung with enough escape velocity to escape any gravitational pull that would get in our way), and we get thrown into the dark space, where we will then have a slightly extended winter
Of course, I'm not ruling out the idea of getting flung into the supermassive black hole at the center of our galaxy, or crashing into another planet not made of gas... the possibilities are endless, but the odds of death are a bit greater than the odds of survival in this case.
So, could this be what the Mayan Calendar predicts, really? I'm not too sure, but again, 4 years is a pinpoint on our universal timeline, so astronomers and astrophysicists could easily see this coming from [several billion] miles away.
In conclusion... I think the Mayan Calendar is full of it. :P
PS: I'm no physicist, but I'm pretty sure it's almost scientifically impossible for the Earth or the Sun to reverse its poles (assuming you're talking about the magnetic poles/magnetosphere?).
PS: ddog1212, I don't trust any source presented to me by someone who uses the word "scientifical".
Maybe my point isn't quite clear, but I'll try to clear up my conclusion:
Predictions don't exist. We can never really see what's gonna happen in the future. Especially in a religious sense.
See, I have this real moron thing I do called THINKING, and have come to the conclusion that it's wise not to believe anything told to you by the church, politicians, parents, and law enforcement officials. Because they're full of it. Stop worrying about the end of the world, especially in some Biblical sense. Trust me, it's far more likely that we humans will nuke ourselves than us seeing those four horses in the sky.
