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 alien invasion involving advanced artificial intelligence could unleash a global financial meltdown, geopolitical turmoil and rioting on the streets, a leading astrophysicist has warned in a fresh ...

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 ...

Imagine a silent, alien surveillance probe entering our solar system, an ancient construct watching us with indifferent eyes. Now, imagine the man suggesting this is not a science fiction novelist, ...