The UN's latest human development index was released today, and is officially being launched in Mexico City. Mexico is rich in history and culture, but it is also struggling to contain gun violence, preserve its press freedoms, and control its escalating drug trade. But Mexico, despite these challenges, is one of several remarkable success stories in the southern hemisphere. The 2013 United Nations Development Program report is called The Rise of the South: Human Progress in a Diverse World. And it highlights the risks and rewards of a global re-balancing of power. Helen Clark is Administrator of the UNDP. She's also the former Prime Minister of New Zealand and she joined us from Calgary.