ELON MUSK, 49. Net worth: $70.6 billion. Strictly speaking, Elon is not a college dropout. He did receive a degree in Economics from the University of Pennsylvania Wharton School and Physics from the College of Arts and Sciences. He then began a Ph.D. in applied physics at Stanford University, but dropped out in two days to start his first company called Zip2, which he created in 1995 to provide business directories and maps to media companies and local e-commerce merchants (bought by Compaq for $340 million). Later, Musk co-founded X.com, which was merged with PayPal, then sold it to eBay for $1.5 in stock, of which he received $165 million. With that money, the founded Tesla and SpaceX, among others.
AFP