The American business magazine Forbes publishes a list of the world's richest people every year. The total net worth of each individual on the list is estimated, in US dollars, based on their assets and accounting for debt.
A Harvard University dropout, founder and CEO of Facebook, Mark Zuckerberg, is the sixth richest person in the world. He is the youngest among top ten billionaires to appear on the list. Together with his college friends he launched Facebook from Harvard's dormitory rooms.
Seventh richest in the world, Larry Ellison is the founder, chairman and CTO of Oracle. Ellison studied at the University of Illinois and Chicago without graduating. Oracle became a successful database vendor to mid and low-range systems leading Ellison to the Forbes list.