The LHC (Large Hadron Collider) is a giant particle accelerator, the largest in the world; a 17 mile long circular tube buried about 100m underneath the French/Swiss border designed to fire subatomic particles at each other very fast and detect what comes out of the wreckage.
Bottom line is that it is a big physics experiment, pure and simple. A very important one, for sure, but that is all it is. However there has been much misinformation and nonsense circulating the internet about the LHC and some unhelpful misrepresentation in the media which as probably fuelled it. Here are a list of some of the claims circulating about the LHC and why they are not true.
1 - The LHC is the "Big Bang Experiment"
This is a misrepresentation in the media, particularly it has to be said, the BBC! The implications, whether intended or otherwise, are that the LHC proves or will prove the Big Bang Theory - this is not true. What they actually mean is that the conditions generated in the LHC collisions may be a close approximation to the theoretical conditions very soon after the Big Bang as predicted by that theory.
However even this is a misrepresentation, because the LHC is all about experimental particle physics, whereas the Big Bang theory is a speculative theory of cosmology. The link is very tenuous, and is about the amount of energy created. The logic is as follows - In the Big Bang (if it happened!) all the energy in the universe was in a very small place at one time - the LHC will create a very large amount of enery in a very small space at one time - therefore the LHC is like the Big Bang! It is silly and unhelpful journalism. It would be like me running a bath and hailing it as the "Atlantis Experiment" because it will recreate the conditions immediately below the surface of the waters above the lost city of Atlantis!
2 - The LHC is looking for God
This is not true. The LHC is not trying to prove or disprove God. It's a science experiment. It's main purpose is to try and establish one of the predictions of the Standard Model of particle physics. This model predicts a hitherto undiscovered particle that is needed to give other elementary particles mass: the Higgs Boson.
Although this particle is sometimes referred to as the "God particle" proof of its existence or non existence says nothing about the existence of God himself. In fact the name has nothing to do with theology or divinity, but is a contraction and a euphemism of the "Godd*mn particle" - because it has proven so hard to track down.
3 - The LHC is wasting money to find something that can be discovered by reading Genesis 1
I do wish Christians wouldn't say things like this. Science is science - faith is faith. They tell us different things about different subjects in different ways. I believe Genesis chapter one, but I don't read anything in there about the Higgs Boson. The LHC is an important and valuable science experiment, and since points 1 and 2 above are not true there is absolutely no reason for Christians to give this kind of knee-jerk reaction to it.
4 - The LHC could create a black hole that will destroy the world
This is scaremongering at its worst. Scientists know that collisions of similar energy to the LHC happen all the time in the Earth's upper atmosphere as cosmic rays collide with the particles there. (Incidentally this also rubbishes the BBC's claim that the LHC will recreate conditions not in existence since the Big Bang)
Even if a black hole did form, it would not be the all consuming monster we know from astronomy. These would be subatomic in size, and so governed primarily by quantum theory. This predicts (in a theory put forward by Steven Hawkins) that the particle-antiparticle fluctuations around the event horizon of the black hole would lead to a net flow of anti-matter into the black hole and a net flow of matter away from it. The result being it would "evaporate" - very fast. If you don't understand any of that, don't worry, just rest assured that the LHC is not going to cause the world to end!