When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

Scientists suggest that advanced aliens might not have physical bodies, challenging traditional views of extraterrestrial ...

DNA may be the blueprint for life on Earth, but the deeper scientists look, the less certain it seems that the rest of the universe has to follow the same rules. From RNA worlds and synthetic genetic ...

Harvard astrophysicist Avi Loeb has floated the provocative idea that humans might themselves be alien‑made 'autonomous probes,' built through advanced synthetic biology rather than evolving entirely ...

With the release of Disclosure Day, Steven Spielberg’s new film about aliens, a question as old as science fiction itself resurfaces: if aliens were to arrive on Earth, would they come to conquer us, ...

Is it the invasion of the genome snatchers? Just in case the idea of aliens walking around in human skin suits wasn’t frightening enough. An outlandish study asserts that aliens might have abducted us ...

The global dispersal of marine and estuarine crustaceans / James T. Carlton -- Human-mediated spread of alien crabs / Annette Brockerhoff and Colin McLay -- The global spread of the Chinese mitten ...