UN talks on climate change looked likely to collapse on Saturday after China and the US clashed over a draft agreement.<br /><br /> The summit has already spilled over into an extra day because of deadlock.<br /><br /> China said the agreement, which is supposed to be signed in Paris next year, put too much burden on poor countries rather than rich nations to limit greenhouse gas emission.<br /><br /> Many developing nations also said there was little in the document to ensure they would receive compensation for damage from floods and rising sea levels caused by global warming.<br /><br /> The US said there was no time for new negotiations.
