The OECD report Environment at a Glance 2013: OECD Indicators offers a comprehensive snapshot of key environmental trends in OECD member countries since the early 1990s. Issues addressed include climate change, air pollution, biodiversity, water resources, and waste. The report reveals big differences in environmental trends in different countries. It confirms that much more needs to be done to break the link between economic growth and environmental damage, and to safeguard the natural resource base on which economic activity and human welfare depends. Australia ranked second worst of all countries assessed in terms of greenhouse gas emission intensity per unit of GDP.