Is the world about to end,
http://news.bbc.co.uk/2/hi/science/nature/7543089.stm
http://en.wikipedia.org/wiki/Safety_of_the_Large_Hadron_Collider
And a few possibilities of what may happen.
http://en.wikipedia.org/wiki/Micro_black_holes
http://en.wikipedia.org/wiki/Strangelets...