FILE - In this Monday, March 9, 2015, file photo, Apple CEO Tim Cook speaks during an Apple event in San Francisco. Cook is joining a long list of magnates promising to give away most of the wealth ... more 
FILE - In this Monday, March 9, 2015, file photo, Apple CEO Tim Cook speaks during an Apple event in San Francisco. Cook is joining a long list of magnates promising to give away most of the wealth that they amass during their careers. Cook mentioned his intentions in a story about him released Thursday, March 26, 2015, by Fortune magazine. After paying for the college education of his 10-year-old nephew, Cook says he will donate the rest of his money to philanthropic causes. (AP Photo/Eric Risberg, File) less 
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Associated Press | Photo By Eric Risberg, File
Fri, Mar 27, 2015 2:48 PM EDT