Reuters: The world’s poorest nations joined small island states on Friday to urge far tougher global goals for fighting climate change, saying their people were at risk from everything from droughts to rising sea levels. The two groups, representing some 80 nations, formed a joint bloc to push for a goal of limiting world temperature rises to as far below 1.5 Celsius (2.7 Fahrenheit) as possible as part of a new climate treaty due to be agreed in December in Copenhagen. "Climate change …