Who is the richest man in the world?
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Who's the richest man in the world? | USA NOW video
Hadley Malcolm hosts USA NOW for May 17, 2013, covering how Bill Gates regained the title of richest man in the world.
Paste BN, USA NOW, Kaveh Rezaei,
Find out how Bill Gates regained the title from Mexican investor Carlos Slim to be No. 1 on the Bloomberg Billionaires Index.