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

But the real truth is that alien life on other planets could be even stranger than floating balloons or amorphous organisms ...

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

WARSAW, Poland (AP) — A respected Polish scientific institute has classified domestic cats as an “invasive alien species,” citing the damage they cause to birds and other wildlife. Some cat lovers ...

Add Yahoo as a preferred source to see more of our stories on Google. The so-called ticks are not the only extraterrestrial bugs appearing on Alien: Earth. We’ve also got a nest of flies, which seems ...