Negotiations between scientists and governments over a key United Nations climate report were going down to the wire Sunday, as officials from major emerging economies insisted that it should recognize their right to development. The latest report by the Intergovernmental Panel on Climate Change, a UN-backed science body, is meant to show the paths by which the world can stay within the temperature limits agreed in the 2015 Paris accord. The agreement aims to cap global warming at 1.5 degrees Celsius (2.7 Fahrenheit) this century. But with temperatures already more than 1.1C higher than the pr…