The long-term healthiness depends on the continued stability and functioning of the biosphere’s ecological and physical systems, often referred to as life-support systems. The health of the population depends on the availability of clean air, water, food, sanitation, exposure to pathogens, toxins and environmental hazards, and numerous genetic, behavioural and social factors. For thousands of years, human life expectancy was low, so, the population growth was slow. The consequences of global warming include the effects on human health. The observed and projected increased frequency and severity of climate-related impacts will further exacerbate human health. As the climate continues to warm up a risk of malaria returning to the developed world is also there. Ticks are also thriving in the warmer temperatures allowing them to feed and grow at a faster rate. This book is an effort to explore the impact of global warming on human health. This book is written for students across a wide range of disciplines. Its simple, logical flow of ideas gives an invaluable grounding in the study of impacts of climate change and highlights the need for action on global warming.