The instrumental period began in the Antarctic with the International Geophysical Year, about 50 years ago. The snapshot we have of the climate during this period is tiny in the long history of the continent. Determining how the environment of the Antarctic will evolve over the next century presents challenges. Climate models are the only means we have of providing synoptic views of future environmental behaviour, albeit crudely and at coarse resolution. However, the effects of increased greenhouse gases are already evident, and the effects of their expected increase over the next century, if they continue to rise at the current rate, will be remarkable because of their speed.

Magazine of the United Nations Environment Programme discussing worldwide environmental policies and other concerns. This issue is devoted to so called "Green Economy" measures such as large public transportation plans, tree planting programs, and government policies that provide incentives for improving energy efficiency.