40 of America's wealthiest families and individuals who have signed on to the Giving Pledge, a charitable project that targets billionaires to pledge to donate the bulk of their wealth.
Each person who chooses to pledge the bulk of their wealth to charitable causes will make this statement publicly, along with a letter explaining their decision. The Giving Pledge is a moral commitment to give, not a legal contract.
Among those who pledged their contributions are Bill Gates and legendary investor Warren Buffet. New York mayor Michael Bloomberg, Hollywood director George Lucas and media mogul Ted Turner.
Complete list of pledges: http://givingpledge.org/