Michelangelo L. Mangano, a respected particle physicist who helped discover the top quark in 1995, now spends most days trying to convince people that his new machine won't destroy the world...

...What the critics are in such a lather about is the $8-billion Large Hadron Collider, a massive assemblage of iron, steel and superconducting wire 300 feet underground in a 17-mile-long...