Boon or Doom as the Large Hadron Collider Spins Up?

On Wednesday, the Large Hadron Collider (LHC) will fire up. The LHC is a massive particle accelerator 17 miles in circumference. And some are worried that spinning up the world's largest atom smasher, located beneath the French-Swiss border, will end the world. Updating the story: ABC refering to AP writes that a beam of protons was successfully fired all the way around a 17-mile tunnel beneath the Swiss-French border.