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, ...

Human activity brings with it alien species and creates excellent conditions that allow them to become established in an otherwise barren Arctic landscape. The slope below the old barn and farm ...

The White House has lifted the lid on the shock extent of an "alien invasion" which has blighted US soil for the past six decades. On a newly-created website, the Trump administration has put out ...