Q. What makes a plant invasive, and why are they considered harmful? Whenever we hear about invasive species, we usually think about pest insects or arthropods such as Argentine ants or fruit flies.

Add Yahoo as a preferred source to see more of our stories on Google. A black widow spider, a venomous species now common in the American West, wrapping up its prey. Smith Collection/Gado/Getty Images ...

Invasive species influence biodiversity across larger spatial extents than previously thought. In a recently published study, researchers from Eawag and the University of Zurich show that the impacts ...

Scientists may have solved Darwin's plant mystery, revealing how climate determines which invasive species thrive.

Researchers have developed a new framework for measuring the suffering caused by invasive species, which they hope will complement the existing global standard for assessing these species’ impact on ...

Most people associate invasive species with ecological disruption, crowded waterways, or the occasional alarming headline ...