The coliseum in Rome was used regularly for about 400 years. | The music band UB40 got its name from an unemployment form in England. | The first Labor Day holiday was celebrated on Tuesday, September 5, 1882, in New York City. | Percentage of women who say they are happier: 85. | Ancient Egyptians believed the "vein of love" ran from the third finger on the left hand to the heart.