The White House has lifted the lid on the shock extent of an "alien invasion" which has blighted US soil for the past six ...

An international research team led by the University of Vienna has produced, for the first time, high-resolution global maps of invasion risk for thousands of alien plant species under current ...

The White House launched a website teasing new information on extraterrestrials this week, but it actually delivers immigrant ...

Add Yahoo as a preferred source to see more of our stories on Google. Some of the greatest sci-fi movies of all time revolve around humans in a desperate struggle for survival. Sometimes we’re ...