Scientists claim to have detected signs of a long-hypothesised alien power-generation technology in the Milky Way galaxy, hidden away in a trove of astronomical data. These hypothetical “Dyson spheres ...

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 ...

There are approximately 27 000 indigenous species in South Africa and 9 000 foreign plant species that have been introduced over the past few centuries. Of these 9 000 exotic or alien introductions, ...

Invasive alien plants are everywhere. You'll find them in fields, forests, and in your backyard. The good news? We can eat some of them, like knotweed. (Alex Wilkie) This is the second of a two-part ...

More than 2,500 alien plant species could find suitable conditions in the Arctic, especially in northern Norway and Svalbard.

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.

The invasive water hyacinth has taken over a communal pond in a small village in northern India. All other plants have been pushed out. Invasive species are reshaping ecosystems and local people’s ...