To provide quantitative metrics for evaluating a country's environmental performance in different policy categories relative to clearly defined targets.

To provide quantitative metrics for evaluating a country's environmental performance in different policy categories relative to clearly defined targets.

To provide an assessment of potential climate change impacts on world crop production.

To provide a database with observed responses to climate change for multidisciplinary studies.

To provide quantitative metrics for evaluating a country's environmental performance in different policy categories relative to clearly defined targets.

To make the acquisition, comparison and analysis of sustainability indicators easier by compiling them in a single database, incorporating multiple country codes, and condensing the indicator descriptions into short methodological summaries in an accompanying data dictionary.

To provide a global subnational map of the prevalence of underweight children that can be used by a wide user community in interdisciplinary studies of health, poverty and the environment.

To provide high spatial resolution subnational estimates of poverty and food security for use by a wide community for interdisciplinary studies of poverty, food security and the environment.

To provide tabular data on human appropriation of net primary productivity by country.

To provide an assessment of potential climate change impacts on world crop production, including quantitative estimates of yield changes of major food.

To provide historical agricultural statistics of the People's Republic of China for 1949-1990 at the provincial and national levels.