The document discusses various types and causes of pollution including littering, water pollution, and air pollution. It notes that littering costs the US $11.5 billion annually to clean up and that plastic trash in the Pacific Ocean has created a garbage patch twice the size of Texas. Water pollution is also discussed, noting that a third of the world's population lives with water stress. Various sources of air pollution are outlined like vehicle emissions, factories, and smoke stacks. The health effects of air pollution include lung cancer, asthma, and other respiratory issues.