OneWorld.net: The humanitarian impact of global warming must be addressed in the next major global treaty on climate change — to be negotiated in Copenhagen in December, urged 18 aid organizations during climate talks in Bonn, Germany. What’s the Story? “The scale of the potential humanitarian challenge presented by climate change in the future is huge,” said John Holmes, United Nations Under-Secretary-General for Humanitarian Affairs. “This is a defining moment to ensure that the challenge …