Although he had lost the title to Mexican magnate Carlos Slim for over six years, a recent surge in Microsoft's stock price has let Bill Gates reclaim the title of the world's richest man.
Gates' fortune now stands at $72.7 billion, while Slim's is $72.1 billion. Slim's fortunes also fell because Mexico passed a bill that will tighten the reins of his enormous telecom company, America Movil.
Next in line? Warren Buffet at $59.7 billion, then Spaniar Amancio Ortega at $57 and finally, IKEA founder Ingvar Kamprad at $55.6 billion. What's remarkable is that both Gates and Buffet have already given so much of their money away, and yet they're still at the top of the list!