Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.
"Scientists are confident that life exists elsewhere in the universe. Yet rather than taking a realistic approach to what aliens might be like, we imagine that life on other planets is the stuff of ...
"Star Wars" has a seemingly never-ending supply of alien designs. However, these five are the worst of the bunch, falling ...
A former CIA-linked physicist's comments about 'four alien species' have reignited UFO conspiracy theories online.
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 ...