Between 2007 and 2012, Bill Gates gave away $28 billion; saving 6 million lives.
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J.K. Rowling lost her billionaire status because she donated so much of her money to charity.
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When the 2013 government shutdown threatened the closing down of a national program giving medical attention and meals to children, John D. Arnold donated $10 million of his own money to keep it afloat.
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