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Climate fluctuations can trigger events that lead to mass migration, hunger and famine. Rather than attributing the blame to nature, the contributors look at the underlying causes of social vulnerability, such as the processes and organisation of society in the semi-arid tropics. Past and present susceptibility to destitution, hunger, and famine in the face of climate variability can teach us about the potential future consequences of climate change. By understanding why individuals, households, nations, and regions are vulnerable, and how they have buffered themselves against climatic and environmental fluctuations, present and future vulnerability can be redressed. Through case studies from across the globe, the authors explore past experiences with climate variability, and the likely effects of, and the possible policy responses to, the types of climatic events that global warming might bring.