Some 75 percent of the world's population live in areas affected at least onceby earthquake, tropical cyclone, flood or drought between 1980 and 2000. The consequences of such widespread exposure to natural hazard forhuman development is only now beginning to be identified. Reducing DisasterRisk: A Challenge for Developmentplays a role in this learning process. Natural disaster risk is intimately connected to processes of humandevelopment. Disasters put development at risk. At the same time, thedevelopment choices made by individuals, communities and nations can generatenew disaster risk. But this need not be the case. Human development canalso contribute to a serious reduction in disaster risk. This Report shows that billions of people in more than 100 countries areperiodically exposed to at least one event of earthquake, tropical cyclone, flood or drought. As a result of disasters triggered by these natural hazards, more than 184 deaths per day are recorded in different parts of the world.