A new paper was published on 10 August regarding LHC safety which proposed a further frightening scenario. Supposing Hawking radiation does exist - will its effects be benevolent? German physicist Rainer Plaga suggests that the collider could start a chain reaction which would resemble an ongoing nuclear explosion in its locale. The results as best I am able to tell would be the reduction of Switzerland and part of France to slag plus the somewhat slower death of the rest of us from irradiation and or nuclear winter.
This insanity is due to start in a few days. Let's hope someone has the good sense to pull the plug.
Plaga's input is mentioned here
http://en.wikipedia.org/wiki/Safety_of_the_Large_Hadron_Collider
For the scientifically able, his actual paper is here
http://arxiv.org/PS_cache/arxiv/pdf/0808/0808.1415v1.pdf