UN head says world is in a race against time

Ban Ki-Moon, the secretary-general of the United Nations has stated that the world is in a race against time against climate change. The COP18 UN Summit in Doha will conclude on Friday, giving the delegates two more days to agree on targets for cutting carbon emissions. The UN says climate change will cost developing countries up to $67 billion each year by 2030. Tarek Bazley reports from Doha, Qatar.