All About Africa PowerPoint. An overview of the continent with animations, interesting facts, photographs from different countries and regions in Africa, and important information about climate, geography, people, social issues, and politics. This digital resource explains the climatic zones and ecosystems of each of the U.N. regions of Africa at length, including the pyramids and deserts of North Africa, the Sahel and desertification of West Africa, the savannas and mountains of East Africa, th