Priscilla Chan – pediatrician, billionaire philanthropist, mother, and wife of Facebook founder and CEO Mark Zuckerberg – is on an ambitious mission to level the playing field for everyone. Chan and her husband have pledged 99 percent of their Facebook shares to the Chan Zuckerberg Initiative. Norah O'Donnell spoke with Chan about the initiative's goals.

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Delivered by Norah O’Donnell, Gayle King, John Dickerson, and Bianna Golodryga, "CBS This Morning" offers a thoughtful, substantive and insightful source of news and information to a daily audience of 3 million viewers. The Emmy Award-winning broadcast presents a mix of daily news, coverage of developing stories of national and global significance, and interviews with leading figures in politics, business and entertainment. Check local listings for "CBS This Morning" broadcast times.