"Did you know that brown rats were brought to the United States in the eighteenth century on a ship from England? Or that thousands of exotic pets were released into the Florida Everglades after a hurricane in 1992, leading to today's booming Burmese python population? All over the country, non-native species from around the world have been introduced to our lands, irrevocably changing the natural balances of their new habitats. This is the story...