Litter refers to waste materials that are improperly disposed of in public spaces, such as streets, parks, and beaches. Common types of litter include plastic bottles, food wrappers, and cigarette butts. Littering can harm the environment, wildlife, and human health, as it can lead to pollution and the degradation of natural habitats. Efforts to reduce litter often involve community clean-up events and educational campaigns about the importance of proper waste disposal. Many cities have implemented laws and fines to discourage littering. Recycling programs and the use of trash cans can also help minimize litter in urban areas.