Italian American physicist Enrico Fermi once asked, “if we live in an infinite universe with infinite capacity for life, why haven’t we seen any aliens?” This question is known as the Fermi Paradox – ...

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"?

The problem with recognition of alien intelligence raised in your review of Adrian Tchaikovsky’s book Shroud was also tackled in a short sci-fi story from the 1970s, in which some humans get stuck on ...