Read
this summary of the LSAG's report. From there, you can read the entire report.
The professionals in the field have determined that there is absolutely no danger to the Earth from the LHC. The fear-mongering is coming from those who have little understanding of the issues. They hear "black hole" and get all worked up, like those who hear "nuclear" and break out in a sweat. They do not understand, therefore they fear.
[conspiracy-theorist]Of course, this is what you would expect them to say, in order to calm the masses. Therefore they're lying and we're all gonna die![/conspiracy-theorist]
Fred