This week's In The News highlights a critical international conference on climate change, the Fourth Meeting of the Conference of the Parties to the UN Framework Convention on Climate Change, currently being held (November 2-13) in Buenos Aires, Argentina. The Convention on Climate Change, signed and ratified by over 175 countries, is one of a series of recent international agreements dedicated to reducing anthropogenic (human-induced) climate change. Although the detection of climate change is a complex and contentious issue among scientists (and is generally refuted by industries afraid of the regulatory consequences), the potential impacts to the earth's ecosystems cannot be ignored. Thus, the Convention's "ultimate objective" is to stabilize greenhouse gas concentrations in the atmosphere at a level -- and with enough time -- to prevent "dangerous anthropogenic interference with the atmosphere." The nine sites discussed provide background information, resources, and information related to COP4 and to climate change.