When first published in 2004, Marie Wilson's Closing the Leadership Gap finally drew attention to what everyone knew but no one talked about-the lack of women in America's leadership positions, even though compelling research shows that women enhance the top decision-making process dramatically. And yet, even as our nation sits on a world spinning with crises, we have barely begun to tap that most critical natural resource. With the possibility of America's first woman president looming large, now is the time to revisit this inspiring call to action.