You can call your city, country, or state government offices to talk to someone about solid waste and pollution control. Take the children to the selected government office to see where region’s waste issues are addressed. How much is created each year? What’s in it and how much? What do they do with it? What kinds of programs do they have to try to reduce waste? Do they have materials the students can take home to their parents? Have staff talk about their individual jobs and projects. You can even have the students break up into small groups and interview different staff people. When you return to the classroom, they can teach one another about what they learned.