Warren Buffett, Berkshire Hathaway's 93-year-old Chairman and currently the world's 10th-richest person with $129 billion in wealth, has reworked his will. "The Gates Foundation has no money coming after my death," Buffett told The WSJ. Instead, Buffett will allocate his wealth to a new charitable trust managed by his children - Howard Graham Buffett, Susan Alice Buffett and Peter Buffett.