Dozens of University of Wisconsin scientists will play a role as the world’s largest particle accelerator fires up today. You may have heard that the Large Hadron Collider located near Geneva, Switzerland could bring about the end of the world, as it smashes two beams of protons together at nearly the speed of light. “The concern apparently is creation of a mini black hole,” explains UW Madison mathematician Terry Millar, who calls such concerns “not worth losing sleep over.”