The United Nations System-Wide Earthwatch is encourages the development of indicators of environment and sustainable development, as a way to improve the delivery of information for decision-making.

The Human Development Index (HDI) is a tool developed by the United Nations to measure and compare different countries’ levels of social and economic development.

It argues that fertility declines in at least some countries with low development scores can be reconciled with some socioeconomic theories. It shows that a handful of development indicators can ...