Climate Change: United Nations Urges States To Act Decisively To Mitigate Worst Effects (Science Daily) United Nations Secretary-General Ban Ki-moon hailed a new report on climate change, urging nations to make decisive efforts to alleviate the worst consequences brought on by global warming. The report, entitled "Climate Change 2007: Impacts, Adaptation and Vulnerability," was released in Brussels by the UN Intergovernmental Panel on Climate Change (IPCC). [News Source]