Invasive Species, Humans, and Where We All Belong

In the early 20th century, U.S. government scientists and their European colleagues went to great lengths to bring home new seeds and cultivars from abroad. But in many cases these "plant explorers," though much vaunted in their day, wound up triggering what are now considered ecological disasters. How did Western attitudes toward imported plants and animals change so completely within a century? Journalist Amy Crawford explores how confronting anxieties about nature and the role of humans in a changing world can place unwanted plants and animals in a new light.