The two-week long climate talks, which began on Monday in Bangkok, had the United Nations cautioning the world leaders to speed up to the streamlining of a draft legal text to help reach a new pact about limiting global warming, as the Kyoto Protocol expires in 2012.

The ongoing talks in the Thai capital is the last crucial round of negotiating between the countries of the world before the December scheduled gathering in Copenhagen, where the UN is likely to finalize a consensus on an agreement to extend and replace the Kyoto Protocol.

With the environmentalists having pinpointed the deadly Philippines floods to convey the already catastrophic effect of climate change, the head of the UN Climate Change Secretariat Yvo de Boer urged the delegates at the Thai talks to speed up the "painfully slow" negotiations.

Addressing the delegates from about 180 countries, Boer said: "Time is not just pressing. It has almost run out. But in two weeks real progress can be made toward the goals that world leaders have set for the negotiations to break deadlocks and to cooperate toward concrete progress."

Thus far, there has been little headway in the UN-led negotiations due to arguments pertaining to the targets of the rich nations to cut carbon emissions by 2020, and requisite funds for poor nations to adjust to climate change and to curtail their own greenhouse gas emissions.