Gender inequity is the great cause of our time -- the next moral dilemma that civilation must attack to move to a higher level. New York Times reporters and husband and wife Sheryl WuDunn and Nicholas Kristoff bring tremendous focus to the issue in their fantastic book Half the Sky.Sheryl WuDunn brought their powerful message to a TED forum in London. Once you start listening to her message, I doubt you'll be able to stop. Click here for more.