Alien plants and animals cost Europe over $1.5 trillion in the last six decades, according to a new study, indicating the global economic impact of such species could be several times higher than ...

The spread of species beyond their native habitat is a human-made environmental change on a global scale. Among vascular plants, over 16,000 species have now permanently settled in foreign countries.

Invasive alien species like lantana camara, prosopis juliflora and water hyacinth have caused mass degradation of native ...

As American as Apple Pie: An Introduction to Weeds -- Out of Africa: How Slavery Transformed the American Landscape and Diet -- A Green Nightmare: The Un-American Lawn -- A Sow's Ear from a Silk Purse ...