Watch the reveal of Fortune’s Most Powerful Women List by Fortune Editors @FortuneMagazine September 18, 2014, 2:09 PM EST E-mail Tweet Facebook Google Plus Linkedin Share icons Fortune Senior Editor at Large Pattie Sellers revealed the 2014 Most Powerful Women list on CBS This Morning on Thursday. She explained why IBM IBM CEO Ginni Rometty is No. 1 in the Fortune rankings — and how General Motors GM chief Mary Barra is seizing this period of crisis at the auto giant to transform a poisonous corporate culture. The remarkable ascension of one of Home Depot’s HD Anne-Marie Campbell, from cashier to Southern division president, captivated CBS Morning Show co-host Gayle King. Watch the interview below.