"Youth," said George Bernard Shaw, "is a wonderful thing. What a crime to waste it on children." Could he have said the same of a college education?

College education is primarily targeted at young people -- who often don't appreciate it till they've done time in the school of hard knocks. Perhaps, then, there's no better time than now for research student Seiji Tokita to be in school. He is 74 years old.

A biology researcher at Tokyo Metropolitan University, Tokita broke with common practice by starting college at 61, after he retired from his banking job of 37 years.