Good news! It seems that, when the Large Hadron Collider at CERN is turned on, it won't actually destroy the Earth. Of course, physicists were already sure of this, but now a new safety review conducted by CERN's governing council has confirmed the fact.
The main argument for why the high-energy reactions won't destroy the Earth is that they haven't so far. Since the Earth gets bombarded with highly-energetic cosmic rays all the time, they point out, the types of interactions that will happen within the controlled confines of the LHC have already happened 1031 times since the universe began. And none of those reactions destroyed the Earth. So since we're still here, these types of reactions aren't going to destroy the Earth. Pretty good logic from where I'm sitting, but it probably won't stop the conspiracy-theorists and doomsday prophets from continuing to predict the end of the world, and it almost definitely won't stop the lawsuit that is attempting to prevent CERN from activating the LHC.
At last, I can relax and stop worrying about the world ending. Until the next over-hyped doomsday scenario, at least.