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 ...

While the findings are grim, experts say prevention and control can curb the problem. Invasive alien species are spreading across the globe at an unprecedented rate and causing widespread ecological ...

Canada is in the midst of an alien invasion. Foreign newcomers like the emerald ash borer and bighead carp threaten Canadian ecosystems, along with industries such as fishing, farming and forestry.