In this tie-in to a film aired by Nature in October 1989, Smith describes the habitats found along Africa's Rift Valley, from Mozambique to the Red Sea. Among these are coral reefs, soda-lakes, desolate highlands, and the teeming Serengeti. Other topics include the region's geology and fossil sites. High-quality photographs and an informative text make this book a good introduction to a famous, yet still mysterious, part of the world. For general collections.-- Beth Clewis, J. Sargeant Reynolds Community Coll. Lib., Richmond, Va.