The children of today are the citizens and leaders of the future. It behoves us, as responsible citizens and leaders of today, to make sure that we provide our children and future leaders with the necessary health, education and guidance to prepare their future for successive generations, and to live in a safe and sustainable environment in harmony with each other and with the world around them. In this book, we bring research about smoking and pollution and its effect on childhood asthma, the issue of childhood obesity and the importance of food, not only for survival, but also for good health.