The casualty and damage due to the natural hazards that struck Kerala in this century as well as the chaos in the mitigation, relief and rehabilitation activities reveal the lack of minimum awareness about the science and destructive power of natural hazards. The book aims to provide basic ideas about various natural hazards, their destructive power, mitigation strategies and safety measures. Written in Malayalam, this book authentically presents the science, history and spacio-temporal distribution of natural disasters - the unforeseen natural phenomena capable of causing indiscriminate death and destruction.