What is the purpose of the new treaty?

The largest international conference on climate change has opened in Copenhagen, Denmark.Representatives from more than 190 nations are seeking a new treaty, designed to halt the warming of the earth. One United Nations official has asked for $30,000,000,000 to help poor countries deal with climate change. Negotiators have not yet been able to agree on how much rich countries should provide to help poor countries. South Africa has offered to reduce the greenhouse gases it released into the air by 34% by the year 2020. The environmental group "Green Peace" said that made South Africa a star at the conference.