Barcelona climate talks face difficulties

The UN climate change talks in Barcelona will lay the groundwork for December's Conference in Copenhagen. It will also likely become the most difficult session, as disputes remain between participants from the more than 180 nations involved. Here's James Kim again with a look at some of the disagreements.

Head of the U.N. Climate Change Secretariat Yvo de Boer attends a  news conference during the Barcelona Climate Change Talks, November 2, 2009. Time has almost run out to break deadlock on a U.N. climate deal supposed to be struck in Copenhagen next month, the United Nations and Denmark warned negotiators at a final preparatory meeting on Monday. REUTERS/Albert Gea

The upcoming Copenhagen meeting is tasked with reaching a new deal on climate change, to replace the Kyoto Protocol, which expires in 2012.

But differences remain between developing and developed countries.

Poorer countries say developed nations must cut emissions by at least 40 percent below their 1990 levels by 2020, far greater than what is on offer.