Thousands of alien species could invade the Arctic, warns a new study. Warmer temperatures and more tourists make it easier ...

Sitka spruce, sika deer and common garden plants are all invasive species with potential to cause harm to native varieties ...

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 ...

Thousands of alien species could invade the Arctic, warns a new study. Warmer temperatures and more tourists make it easier ...

More than 2,500 plant species have the potential to invade the Arctic at the expense of the species that belong there. Norway is one of the areas that is particularly at risk.

More than 2500 plant species have the potential to invade the Arctic at the expense of the species that belong there. Norway ...