A familiar face once again tops Forbes' list of the world's richest billionaires.
Find out which billionaire tops Forbes' list of the richest people on the planet for 2015.
Oscar Flores photo
John Palminteri photo
Justin Sullivan/Getty Images
Public domain image
From Taronga Zoo via CNN
Nobel Prize Committee/Twitter
Pascal Le Segretain/Getty Images
Philipp Schmidli/Getty Images
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