A "strange" prehistoric plant species is the lone representative of a mysterious group of organisms that no longer exists, scientists have discovered. The first evidence of the species—in the form of ...

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

An “alien plant” fossil discovered 55 years ago just outside of an abandoned town in Utah has no relation to any currently existing or extinct species, scientists revealed in a study last month.

Scientists have discovered a unique fossil that does not match any known species of flowering plants, an advance that sheds more light on the planet’s ancient diversity. Researchers first spotted the ...

Researchers conducted the first analysis ever to determine our planet's global hotspots where existence of alien plants and animals is the greatest. Alien plants and animals are those living beings ...

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. Species that are not ...