1 October 2012 — Australia has joined the Climate and Clean Air Coalition – an alliance of more than 24 nations, intergovernmental organisations, the private sector and civil society. The coalition is committed to rapid action to reduce short-lived but highly potent pollution caused by methane, black carbon, tropospheric ozone and hydrofluorocarbons. Climate Change and Energy Efficiency Minister Greg Combet said apart from trapping heat in the atmosphere, the pollutants could also be extremely damaging to human health, air quality, crop yields and ecosystems. The Climate and Clean Air Coalition is chaired by the United States and Nigeria and includes Germany, Japan, the UK, France, Italy, Bangladesh, Colombia, Ghana, Mexico, Canada,