THE horrors of Haiti

Lasting solutions to water challenges require a broad range of expert knowledge about climate, ecology, farming, population, engineering, economics, community politics and local cultures, says Jeffrey D Sachs

Long-lasting insecticidal bednets (LLINs) are one of the major ways to control malaria, and they are widely accepted worldwide by communities in areas affected by malaria. One LLIN costs about US$5 to manufacture and is effective for about 5 years.