Business has its ups and downs, and so, naturally, do women in business. (Bye-bye, Martha!) But the story of this list is one of achievement: The credentials of these women, including the 13 newcomers, are the strongest yet.
By Katie Benner, Eugenia Levenson, and Rupali Arora
29 of 50
29. Sheryl Sandberg
VP, Global Online Sales and Operations Google (GOOG)
2006 rank: New Age: 38
Sandberg's division has helped make Google's online ad network one of the world's largest, and it accounts for more than half the company's $10.6 billion in revenues. She is the youngest woman on our list.
