The following report documents how, over the next 30 to 40 years in parts of sub- Saharan Africa, between 100 million and 200 million people are likely to be without sustainable food supplies. This was the conclusion of a multidisciplinary group of experts from Africa and North America, who asked what will happen in the Sahel when new projections of global warming are combined with rapid population growth. The meeting was not the first on the Sahel, but the breadth of expertise in agriculture, climatology, demography, family planning, the status of women, terrorism, and national security...