"Star Trek" is home to countless alien species, many of whom offer beloved characters. Some are not. We rank the 10 most ...

Erik Irmer has been documenting the spread of invasive plant and animal species that disrupt native ecology across Europe. He focuses on humans’ interactions with these plants and animals. Aliens is p ...

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.

Researchers at University of Tsukuba have, for the first time, recorded the songs of the Chinese hwamei Garrulax ...

Have you noticed some curly, spiky, gray-green, alien-like plants resting in a shell, hanging from a ceiling, perched on ...

The Amazon sailfin catfish is characterised by a body covered with bony plates and a thick, armoured structure. Native to ...