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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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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In 2002, Kenyan Maasai tribespeople donated 14 cows to the US to help with the aftermath of 9/11.
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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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