Sheryl Sandberg on why we have too few women leaders.

     Facebook COO Sheryl Sandberg looks at why a smaller percentage of women than men reach the top of their professions -- and offers 3 powerful pieces of advice to women aiming for the C-suite.

     Long before Sheryl Sandberg left Google to join Facebook as its Chief Operating Officer in 2008, she was a fan. Today she manages Facebook’s sales, marketing, business development, human resources, public policy and communications. It’s a massive job, but one well suited to Sandberg, who not only built and managed Google’s successful online sales and operations program but also served as an economist for the World Bank and Chief of Staff at the US Treasury Department.

     Sandberg’s experience navigating the the complex and socially sensitive world of international economics has proven useful as she and Facebook founder Mark Zuckerberg work to strike a balance between helping Facebook users control privacy while finding ways to monetize its most valuable asset: data.