Some living things are having a tough time living these days. The problem has to do with us getting in their space too much. We're polluting the air and water, cutting down trees, and building roads where there haven't been any before. When habitats shrink or get too filled with people, creatures lose that "at home" feeling and start dying off. Since none of us wants to live in a world with no plants or wildlife, this is a good time to start protecting the critters who are still around.