Use a comma to separate two independent clauses when they are joined by one of seven coordinating conjunctions (for, and, nor, but, or, yet, so). We were out of ice cream, so I went to the store. (c) ...

If you’re looking for a grammatical convention guaranteed to spark an unnecessarily outraged debate, look no further than the Oxford comma [Editor’s note: I don’t know that I’d call it unnecessary].

“There are people who embrace the Oxford comma, and people who don’t, and I’ll just say this: never get between these people when drink has been taken,” wrote author Lynne Truss in her punctuation ...

The question is how to interpret the comma after “free state.” Justice Antonin Scalia, the author of the ruling, wrote that the comma set apart a mere preface to the “operative clause” of the ...