Give it away

Another 17 of America's richest people, including Facebook CEO Mark Zuckerberg, junk bond pioneer Michael Milken and AOL co-founder Steve Case, have promised to give away most of their wealth.

At 26, Zuckerberg has put himself on the map not only as one of the world's youngest billionaires, but also as a prominent newcomer to the world of philanthropy. Earlier this year, he pledged $100 million over five years to the Newark, N.J., school system. Now, he's in the company of media titans Carl Icahn, 74, Barry Diller, 68, and others who have joined Giving Pledge, an effort led by Microsoft founder Bill Gates and investor Warren Buffett to commit the country's wealthiest people to step up their charitable donations.

The group has signed up 57 people and their families since launching the campaign in June. The list also includes New York Mayor Michael Bloomberg, CNN founder Ted Turner and film director George Lucas. But Zuckerberg and Facebook co-founder Dustin Moskowitz, 26, are the two youngest.

"People wait until late in their career to give back. But why wait when there is so much to be done?" Zuckerberg said in a statement. "With a generation of younger folks who have thrived on the success of their companies, there is a big opportunity for many of us to give back earlier in our lifetime and see the impact of our philanthropic efforts."

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