Greetings, fellow humans.
As most of you probably know, far off on the Franco-Swiss border near Geneva, 100m underground, CERN (Conseil Européen pour la Recherche Nucléaire - European Council for Nuclear Research) has switched on the Large Hadron Collider, or LHC for short. The end was nigh.
But here we are! So now to understand what could have 'killed' us as a race of beings in God's creation.
The whole idea of the LHC is to provide humanity with understanding - something we've striven to achieve for the entirety of our intelligent existance. The processes that will be performed inside the CERN laboratories using the LHC, will break down even the smallest known particles; they will display to us the very building blocks of creation. This is where our understanding of this vast universe truly begins.
The LHC itself is a 27km ring of superconducting magnets, wherein particles will be accelerated and collided, studied and broken down, sent to and analyzed by a multitude of detectors in a grid around the world. Tens if not hundreds of thousands of discs of data for the world's scientists to pore over
I'm not going to go into the smallest details regarding each experiment going on, but I will give a brief summary (with my limited understanding (hey, I'm not a rocket scientist, I'm a Mr. Rockets COO)).

First we have the ALICE (A Large Ion Collider Experiment) detector. This 26m long, 16m high and 16m wide 10,000 ton beast of a machine is located beneath St. Genis-Pouilly, France. ALICE will, by colliding lead ions, recreate the conditions just after the Big Bang, allowing scientists to examine a state of matter that existed for only a very very short time after the event. The collisions inside this machine will create heat more than 100,000 times hotter than the core of the sun!

Second we have ATLAS (A Toroidal LHC ApparatuS). Destorying ALICE in size, ATLAS stands 46m long, 25m high and wide. It is the largest volume particle detector ever constructed, and is located beneath Meyrin, Switzerland. This device will - wait for it - search for extra dimensions, and particles that could make up dark matter. The CMS (Compact Muon Solenoid), located in Cessy, France and standing at 21m long, 15m high and 15m wide, will also help detect these things, however two different processes will be used between the two.

Weighing in at 5,600 tonnes over 21m in length, 10m high and 13 m wide, we also have the LHCb (Large Hadron Collider beauty). The LHCb experiment, located in Ferney-Voltaire, France, is meant to help scientists understand why we live in a Universe that appears to be composed almost entirely of matter, but no antimatter. This will be done by studying a type of particle called the 'beauty quark' or 'b quark', and will rely on sub-detectors close to the collision point inside the machine.
This shouldn't be confused with the LHCf (Large Hadron Collider forward) simulators located in Meyrin, Switzerland (each of the two sized at only 30cm in length, 80cm in height and 10cm wide), where forward particles created inside the LHC will be used to simulate cosmic rays!
Finally we have the TOTEM (TOTal Elastic and diffractive cross section Measurement) experiment. The Totem is stretched among 8 specially designed vacuum chambers called 'Roman Pots' located along 440 m of the LHC pipes. These Roman Pots will be paired in 4 locations near the CMS experiment to monitor the collisions, where they will measure the size of the proton and monitor the LHC's luminosity.
So what does this all mean?
It's the future. Simple as that. It is higher scientific understanding. It is what will allow humanity to proceed with scientific discovery far into the future. The technologies that can be made possible by the further understanding of physics tested by the LHC could bery well allow humanity the ability to travel at light speeds. It's not just science fiction anymore.
I know many people have seen J.J. Abrams' movie, Star Trek, and witnessed the destruction of the planet Vulcan due to a black hole generated on that planet and wonder: "Hey... if the LHC is planning on creating black holes on Earth, won't we all... DIE?!", I find it is comforting to heed the wise words of that wheelchair bound genius.
"The world will not come to an end when the LHC turns on. The LHC is absolutely safe. ... Collisions releasing greater energy occur millions of times a day in the earth's atmosphere and nothing terrible happens."
Prof. Steven Hawking, Lucasian Professor of Mathematics, Cambridge University
"Once you have eliminated the impossible, whatever remains, however improbable, must be the truth.
-Spock, from Star Trek (2009)
-Dan