Particularly in sub-Saharan Africa, agriculture is predominantly rain-fed and, therefore, prone to unstable weather conditions and less productive than in other regions of the world. Increasing the efficiency and sustainability of farmer groups and cooperatives is of primary importance to many...

In their 1963 classic Scarcity and Growth Howard Barnett and Chandler Morse argued that resource scarcity did not threaten economic growth. A second investigation in the late 1970s, Scarcity and Growth Reconsidered, reached largely the same conclusion. The 25 years since that work was published...