: Some sci-fi aliens feel made up on the spot. Others seem so fully realized they could exist. This video explores the species with the deepest lore, logic, and worldbuilding in science fiction.

The Bern Convention Group of Experts on Invasive Alien Species (IAS) was established in 1992 to accompany Bern Convention Contracting Parties in designing and implementing control measures for ...

Over four decades, the Alien franchise has brought many different versions of the xenomorph creature to theaters.

Introduction: Nonnative species in the world / David Pimentel -- The impacts of alien plants in Australia / Richard H. Groves -- Environmental and economic costs of invertebrate invasions in Australia ...

How do you grow and evolve to fit into an alien environment? James S. A. Corey, the nom de plume of the duo behind the Hugo ...

One of the alien creatures brought to Earth in the crashed USCSS Maginot is an eye-like creature with tentacles dubbed the T. Ocellus. This creature was creepy to begin with, but Alien: Earth gave us ...