http://en.wikipedia.org/wiki/Large_Hadron_Collider The Large Hadron Collider is the largest and most complex scientific instrument ever built and the highest energy particle accelerator in the world. The accelerator is located 100 m underground and runs through both French and Swiss territory. ( 27km circumference) Year 2008 September 10th, marks the culmination of 20 years of work by over 8000 scientists thousands of engineers, technicians and support staff from over 80 different countries. some critics say that this could create a black hole and suck up the entire world..but many say that even if a black hole is created it will vanish within a millionth of a second.. Latest : they have successfully done the 1st testing on the 10th September 2008, sending 2 beams separately clockwise and anticlockwise, which had successfully gone all the way around the ring. but there had been some minor errors, which we dont have to worry about. They are going to do one big collision on the 21st of October, but apparently, They wont be running the beams at "full power" until 2009, after their winter maintenance they'll be shutting down till the end of November. It'll be 2009 that the collisions will be 14TeV.