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.

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.

Fossilized plant remains discovered near a Utah ghost town have stumped scientists, who are unable to link them to any modern or extinct plants. When you purchase through links on our site, we may ...