Addressing public health externalities often requires community-level collective action. Each person's sanitation behavior can affect the health of neighbors. We report on a cluster randomized controlled trial conducted with 19,000 households in rural Bangladesh where we randomized (1) either...

We document the rise in unemployment in South Africa since the transition in 1994. We describe how changes in labour supply interacted with stagnant labour demand to produce unemployment rates that peaked between 2001 and 2003. Meanwhile, compositional changes in employment at the sectoral level...