As the number of people living on the Earth grows by millions each year, many people fear that the planet cannot sustain an ever-growing population. In fact, many suggest that the impact of population growth on our environment and health will make for dire consequences sooner than you might think. Find out more about how population growth negatively affects our world and what people are doing to solve the problem. Learn about the impact population growth has on food and water supplies, as well as population growth's affect on human health.