Keanu Reeves has a private cancer foundation to help children’s hospitals and cancer research, but he does not attach his name to it. He also has spent over 5 million dollars to help his sister in her fight against leukemia.
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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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As of April 2010, Bill Gates had donated $36,854,000,000 in his lifetime! That's more than half of his total net worth!
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