According to National Geographic, pollution is "the introduction of harmful materials into the environment." There are many types of pollution; air, water, noise, land, light, and soil pollution are just a few of them. All of these became major problems because of humans, but we can fix it. On this website, you'll learn about light, water, land, noise, and air pollution, and you'll learn what you can do to fix it. It's very important to remember that, when it comes to pollution, everything you do counts.