Rough story from a Philadelphia college: A math professor walked out of his class and dove headfirst over a second-floor balcony to his death, falling as far as 30 feet to the marble floor of a hall at Chestnut Hill College, reports the Philadelphia Daily News. "He had a history of depression," a police spokesman said of 71-year-old Rudolf Zaffino. "He had been having suicidal thoughts and mentioned harming himself in the past." Zaffino's wife, also an adjunct professor, was in the building at the time. (More Philadelphia stories.)