The investigative minds at How to Survive analyze alien invasion scenarios, threat management, and practical survival advice.

We may receive a commission on purchases made from links. Are we alone in the universe? It's a huge question with no easy answer. And, following on from that, if we aren't alone, what would beings ...

Be it sci-fi, immigration or even artificial intelligence, the concept of aliens mirrors how we define fear, fascination and the "others" among us. What springs to mind at the mention of "alien"?