Invasive species are everywhere, from forests and prairies to mountaintops and river mouths. Their rampant nature and sheer numbers appear to overtake fragile n

Identify and understand the plants that are changing the North American landscape forever.

An analysis of the ecological and political impacts of invasive species, written by a leading invasion biologist

"Invasive nonnative plants threaten native species with habitat loss, displacement, and severe population declines, thus seriously reducing biodiversity. Invasi

All over the planet, organisms of many species are appearing outside of their natural habitats—often carried by that particularly peripatetic species Homo sap