Concerns have been raised regarding the safety of the Large Hadron Collider (LHC) on the grounds that high-energy
particle collisions performed in the
LHC might produce dangerous phenomena, including
micro black holes,
strangelets,
vacuum bubbles and
magnetic monopoles.
[16][17][18] In response to these concerns, the LHC Safety Study Group, a group of independent scientists, performed a safety analysis of the LHC and concluded in a report published in 2003 that there is "no basis for any conceivable threat".
[19] In 2008, drawing from new experimental data and theoretical understanding, the LHC Safety Assessment Group (LSAG) published a report updating the 2003 safety review, in which they reaffirmed and extended its conclusions that LHC particle collisions present no danger.
[20][21][22][23] The LSAG report was reviewed and endorsed by
CERN’s Scientific Policy Committee (SPC),
[24] a group of external scientists that advises CERN’s governing body, its Council.
http://en.wikipedia.org/wiki/Large_Hadron_Collider