Geography is the discipline that explores our world. It has been called the "mother of science" as all other sciences and disciplines have evolved from people's earliest attempts to understand their geographic space or place. Today Geographers combine two approaches to their activities -- that of the spatial perspective and that of the regional concept. The premise is that no event, situation or challenge in human society can be fully understood without knowledge of the distinctive qualities of the place in which they occur. Geographers, as in all fields, specialize and they approach the field from different angles. Some concern themselves with population studies, others with a mathematical perspective, and others with either economic, political, social or some cultural aspect. But all geographers tend to take a multidisciplinary approach to the study of how geographic space influences people and how, in turn, people affect their geographic place.