Physicists have looked at all the angles on this, and are pretty certain there's nothing the LHC could do that would pose a threat to the world. On the other h

Physicists have looked at all the angles on this, and are pretty certain there's nothing the LHC could do that would pose a threat to the world. On the other hand, the universe still looks pretty empty of extraterrestrial civilizations, despite the availability of nice planets and so forth. Perhaps they were all pretty certain too.