This Technical Note provides a summary of the key elements and design features of 11 different carbon offset programs. It discusses the essential differences and similarities between programs, and discusses how these programs address key issues, such as: efficiency, environmental integrity, applicability, and transaction costs.

Urbanization is transforming the developing world. However, understanding the pace, scale, and form of urbanization has been limited by a lack of consistent data.

The most severe impact of the Ebola epidemic, which began in Guinea in December 2013 and quickly spread to Liberia and Sierra Leone, has been in lost human lives and suffering. This report, prepared for the World Economic Forum at Davos, focuses on the indirect, economic costs, in particular the effects on economic output in 2015.

Inequality in South Asia appears to be moderate when looking at standard indicators such as the Gini index, which are based on consumption expenditures per capita. But other pieces of evidence reveal enormous gaps, from extravagant wealth at one end to lack of access to the most basic services at the other.