The latest news on UN
The United Nations conference is scheduled to begin on Dec. 7, 2009.
Pledges by the U.S. and China for emissions reductions still seem timid to many experts.
President Obama will not be present during the climate conference's crucial final negotiations.
The president will pledge to cut CO2 emissions by 17 percent from 2005 levels by 2020.
Leading atmospheric scientist sees "coin-flip odds" for serious consequences from record CO2 levels.
President Obama, along with China's Hu Jintao and India's Singh, have yet to confirm their attendance.
The collapse of its industry has allowed Ukraine to reap the profits of selling carbon credits.
The UN suggests that family planning could contribute to the battle against global warming.
Secretary of State expressed doubts that too many hurdles existed to reach a legally binding agreement.
Both President Obama and German Chancellor Angela Merkel have expressed interest in attending.