Retirement can sometimes be the time to start really making a contribution.  When John Mika, 58, discovered how much teachers in Buffalo, N.Y., were spending, out of their own pockets, for school supplies, he decided to do something about it: Name: John Mika Role: Substitute teacher, everyday philanthropist The Problem: As a substitute, he discovered…Read More


  Salman Khan is a classic outlier who has given the world what many consider to be a great gift. It all started out with a YouTube upload. This hedge fund manager decided to use YouTube as a way of sending his cousins a little instructional video on math. The cousins were pleased. So was…Read More