Facebook founder Mark Zuckerberg and wife Priscilla Chan announced the birth of their daughter Maxima this week, but that wasn't all the news they had to share. The couple pledged to donate 99 percent of their Facebook share, a fortune currently estimated at $45 billion, to philanthropic efforts.
The Chan Zuckerberg Initiative, the name of the couple's new organization, will focus on "personalized learning, curing disease, connecting people and building strong communities,"
the pair wrote on Facebook
Zuckerberg's commitment puts him in league with other billionaire philanthropists who are spending the wealth they earned for their life's work to change the lives of others. Combined, the men and women on this list have pledged to give away hundreds of billions of dollars.
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