The world has centred its green revolution around the greenhouse effect. However, the working of the atmosphere and the nature of atmospheric change is poorly understood. The media and public interest have placed the atmosphere, greenhouse effect, ozone depletion, acid rain and so forth in the school curriculum. Often the information reflects the news or headlines of the day, rather than facts concerning the operation and changing nature of the atmosphere. This book redresses the balance by giving secondary school students up to date information about these global issues and putting them in a scientific context. Only by understanding the complexity of the atmosphere can these issues be examined. The CSIRO has provided staff and resources to ensure accuracy. Teachers will feel relieved to find a text which is an accurate scientific account of our atmosphere and its problems of today and beyond.