Some insects look more like aliens than they do insects. One example is a grasshopper that is able to survive by not looking ...

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

The most beloved beings from strange new worlds.

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

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 ...

The sea is dark and full of terrors. There may or may not be water on Mars, but there are apparently Martians in the water. A fisherman is making waves after sharing footage of a bizarre, mystery sea ...

They’re UFOs — unidentified floating objects. Online denizens were left baffled after mysterious blobs were spotted in an Oklahoma lake — with many comparing them to “alien eggs.” The Oklahoma ...