Pollution is the introduction of contaminants into the natural environment that cause harm. It has increased significantly since World War II due to rapid industrialization in developing countries. The main types of pollution are air, water, noise, and soil pollution. Air pollution damages health and the environment. Water pollution contaminates water bodies. Noise pollution affects both physical and mental health. Soil pollution alters the natural composition of soil. Various industries, vehicles, and other human activities are major causes of the different types of pollution. Collective efforts are needed such as use of renewable resources, waste treatment, and increasing green cover to control pollution.