The aliens have landed in Wisconsin! You may see them and not even know they are aliens. These invaders are actually exotic plants and animals that have been introduced to our state from other countries or habitats on purpose or by accident. They can cause all kinds of problems for plants and animals that have always lived in our state. Read these stories and find out how to pick aliens out of a crowd, learn how to identify impostors, and how to help exterminate these alien invaders before they take over!