From what he originally called the fix-up sci-fi collection to the words he invented in its stories, here’s what you need to know about Asimov’s ‘I, Robot,’ which turns 75 this year.

Originally written over 60 years ago, Isaac Asimov’s I, Robot is becoming truer with every day that passes. The world that he imagined is now upon us. As Radio 4 broadcasts its adaptation of ...