A video giving a tour of the LHC (underground accelerator) at CERN. Measuring 27km in circumference, it will become the world's largest particle accelerator. The first beams are due for injection mid-June 2008 with the first collisions planned to take place 2 months later. The LHC will become the world's largest and highest-energy particle accelerator. For more information, see: http://en.wikipedia.org/wiki/Large_Hadron_Collider http://lhc.web.cern.ch/lhc/