I heard about that! And I heard about the possibility of a “strangelet” occurring, which makes everything it touches a strangelet thus turning earth into nothing but strangelets. I saw that on a Horizon episode called “End Day” where they explored end-of-the-world scenarios. It was pretty neat watching the world get sucked into strangeness, especially because they showed what it would look like on the earth as it was happening! I don’t know how much it had to do with actual physics though.
Anyway, at the end of that scenario a physicist came on and said that there was near nil possibility of anything like that happening. Black holes that the accelerator produces are supposed to evaporate almost instantaneously, right?