Every day, on nearly every ship cruising the world's oceans and lakes, millions of stowaways are hitching a lift. When set free at the end of their voyage, some set up home in their new surroundings - ...

Introduced species generally get a bad press – but not all alien invaders are villains, says Ken Thompson in Where Do Camels Belong? WE HAVE all heard a lot of bad stuff about introduced species: they ...

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 ...

ENTRY to Zealandia is past a checkpoint where all bags and pockets are turned inside out to stop unwanted stowaways, and then through a double gate. Inside the 2.2-metre-high fence is an ancient world ...

SALT LAKE CITY — The first thing to know about potential alien invaders is that the U.S. Government no longer classifies them as unidentified flying objects. That sounds too scary. They are classified ...

Hollywood legend Steven Spielberg revisits the sci-fi genre in his newest movie, Disclosure Day, which is heading to theaters this summer. After teasing the look of the extraterrestrial invaders of ...

Movies that center on the battles fought by members of the military certainly have their place, but sometimes it's more fun to see what (albeit, fictional) soldiers might do against an alien combatant ...