Climate Change
Climate change affects every country on every continent and the past decade has witnessed retreating polar and glacial ice, record sea levels, increasing ocean heat and acidification, and extreme weather phenomena. Since the 1990s the United Nations has engaged in a multilateral effort to create an effective global strategy for combatting climate change, which the Organization has supported by aiding scientific research as well as the development of international agreements. In 2007, the Nobel Peace Prize was awarded jointly to former United States Vice-President Al Gore and the UN Intergovernmental Panel on Climate Change (IPCC) "for their efforts to build up and disseminate greater knowledge about man-made climate change, and to lay the foundations for the measures that are needed to counteract such change."