The world's population is growing, and with this growth comes an increased pressure on the resources, such as food, water, land for housing and energy sources, we need to live. The way in which humans are treating the planet they live on is having a significant effect on the global climate. This matters because the future of life on Earth, no less, depends on our understanding of the problem and the actions we take. This book is one in the Question It! series for readers upwards of age 10, which explores globally important topics relating to the environment in a balanced and objective way, encouraging readers to adopt a questioning approach to the issues involved. Titles in the 6-book series are: Climate Change, Food, Natural Habitats, Oil, Population and Water.