needausername post=18.70381.689601 said:
I heard about this, but the world only ends if it goes wrong, and who heard of scientists (especially Government ones) getting something wrong. So we should be pretty darn safe I think.
Especially considering the fact that there is actually no "wrong" in science, since even an unsuccessful experiment would yield some results ^^
A friend of mine is studying Physics. He told me they would primarily smash Baryons onto each other (Alpha particles mainly, Nuclei). That's quite a mass, but if I understood the theory of gravity correctly, there might really be black holes (or actually micro-singularities) for some time, but as long as the vacuum inside the collider is maintained, they should be quite harmless, as they MIGHT have the density of a black hole, and even an event horizon, but because of their small mass a quite weak gravitational field.
Some years ago scientists discovered energy streaming out of black holes they observed. If this is true, these micro-singularities should dissolve into Gamma Radiation before they can do any harm.
If they are stable though... Well, as joswle pointed out, there are a lot less exciting possible apocalypses than a black hole ^^