Warren Buffett is donating $6 billion worth of Berkshire Hathaway stock to five foundations, including the NoVo and Bill & Melinda Gates Foundations as well as three family foundations: the Susan Thompson Buffett, Howard G. Buffett, and Sherwood foundations. This brings Buffett’s total donation amount to $60 billion, since he began giving away portions of his fortune in 2006. In 2010, the Oracle of Omaha pledged to give more than 99 percent of his wealth to philanthropic causes during his lifetime or at his death. – Mark Champion