Billionaires Going Philanthropic
A new campaign calls on billionaires to pledge their wealth to charity instead of leaving it to heirs.

PHILANTHROPIST MAYOR: New York City Mayor Michael Bloomberg speaks about the World Trade Center site on September 7, 2010 in New York City. Bloomberg is among 40 U.S. billionaires who pledged to donate a bulk of their wealth to charity. Mario Tama/Getty Images
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