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Cern - Geneva, French Swiss border
Cern, the European Organisation for Nuclear Research, is one of the world's largest particle physics laboratories. The lab employs 2,600 people and uses six particle accelerators and detectors to collide particles at high energies. In May it will switch on a new particle collider, the Large Hadron Collider, (LHC) which will accelerate sub-atomic particles to 99 per cent the speed of light along a 27km circular tunnel - triggering collisions at energies similar to fractions of a second after the Big Bang.