Guardian: Fifty-five countries have formally pledged to cut or limit their emissions in a move welcomed by the UN’s climate change body as an important step towards achieving a legally binding global agreement. They include the US, all EU countries and China, as well as major emerging economies such as Brazil, Indonesia and India. The 55 nations between them emit 78% of the world’s greenhouse gases. But, significantly, the group includes only Brazil from South America, and just six out of 55 …