The United Nations climate change summit in Qatar has entered a third day after talks stalled Tuesday on a possible extension of the Kyoto Protocol, an agreement designed to curb greenhouse gas emissions that expires at the end of this year. New Zealand, Japan and other countries have announced they will not agree to a second round of the protocol. Speaking to Al Jazeera, the head of Japan’s delegation said Kyoto covers less than a quarter of global carbon emissions and noted major polluters such as the United States are not bound to emissions reductions under the agreement. Meanwhile, a new U.N. report has found thawing permafrost could significantly accelerate global warming in the coming years as it releases carbon and methane from frozen organic matter. The United Nations says that by 2100, warming permafrost could release up to 135 billion metric tons of carbon dioxide, which is equivalent to 39 percent of annual emissions from human sources. Tune into Democracy Now! next week as we travel to Doha to bring you live coverage of the United Nations climate summit.