Maybe the scientists at CERN heed no attention to the scientifically backed up claims that any miniature black holes created by the LHC would NOT evaporate, throw all caution to the wind, run the thing at full power, which could possibly create a black hole and suck the earth into the 10th dimension, or create antimatter which fuses with matter to create an earth-cracking explosion.
If there were a black hole created at CERN, unless something totally whacky (which I guess is possible) happens, then that black hole wouldn't even be detectable for around 10 years! And even then, it would a pathetic size. 50 years down the line however? We may well be screwed ^_^
Anyway. Dying in 2012 IMO is total bull. No offense intended here, but the way I see it is that it's just some crazy, paranoid, old, ever-so-slightly mad guy predicting the future. Which, from my point of view, is obviously wrong!
Now...Possible reasons for us to all die? Personally, the main one to watch out for is Climate Change. Not nessecarily the man-made stuff. But over the years (we're talking hundreds of thousands of years), it's been proven that climate change does happen; it gets really warm, then we go into an ice age. Obviously, if we're speeding it up, we're just going to send ourselves into an ice age sooner than predicted, and we will, with current technology, not be able to survive all that long!
Could be entirely wrong, and we will all die from the Earth exploding in 2012. Or we could all be eaten by bears. Or monkeys could all suddenly turn evil and kill us. There's no way of telling how/when we will die (it's
almost a certainty that it will someday!), so, that's why I think these predictions are wrong.
Sorry for rambling onto unrelated subjects, which almost certainly just happened, but rambling is my strong point!