Agence France-Presse: World talks on climate change may not yield a legally-binding pact by year’s end, UN pointman Yvo de Boer said on Wednesday in his first public assessment after last month’s turbulent Copenhagen summit. De Boer, executive secretary of the UN Framework Convention on Climate Change (UNFCCC), said he had taken stock among a number of countries after the Copenhagen meeting. The mood among them was to forge an agreement this December on how to tackle climate change and then discuss …