Obstacles to a climate change agreement in Copenhagen

World leaders gathered at the United Nations on Tuesday to discuss the global environment, with the aim of generating momentum ahead of talks this December in Copenhagen, where nations will try to agree on a new treaty to reduce greenhouse gasses.
Secretary-General Ban Ki-moon said failure to reach broad agreement would be morally inexcusable. U.S. President Barack Obama said the threat is urgent and growing. And Chinas president said his country will continue to take determined action.
Kumi Naidoo, chairman of Tck Tck Tck and future executive director of Greenpeace International, joins Daljit Dhaliwal to discuss the major obstacles to getting an agreement in Copenhagen.