The deepening food crisis in West Africa has sparked fears of a major famine. Unless urgent action is taken, events in the region might easily mirror the kind of devastation seen recently in the Horn of Africa. With our ongoing coverage of this escalating emergency, you may have a variety of questions about what’s going on in West Africa. Here’s a quick guide to understanding the crisis and how World Vision is responding. *     *     * What went wrong? Poor rains have led to poor harvests. Crop yields have been nonexistent in some areas — and severely reduced in others. In addition, recent conflicts, the return of hundreds of migrant workers, and a flow of refugees from Mali into one...