Have We Already Been Invaded By Aliens?

Humanity has been searching for alien life for decades. But, what if the aliens are already here? We look to the skies and out into space, hunting for UFOs, Extraterrestrial beings and other-worldly lifeforms... But aliens might walk among us, without us even realising. It's a conspiracy theory that has captured the imagination, but what if it were true? Would the world be a different place? Or would we all just carry on, powerless to our alien overlords? read more...