It's one of the most famous quotations in modern history. But who first wrote it? In the Yale Alumni Magazine, Fred Shapiro presents new historical evidence and sparks a debate that is far from serene.

Everybody knows about differences between American and British English like truck vs. lorry or elevator vs. lift. On her blog Separated by a Common Language, Lynne Murphy (an American linguist teaching in the UK) takes on subtler distinctions like proctor vs. invigilate or day care vs. crèche.

Want to find out Topic A in the U.S. Congress on any given day? Check out Capitol Words, which computes the most frequently appearing word in the daily record. While Congress is out of session, you can browse through previous hot topics.

Which British television actors are best at pulling off American accents? Readers of BBC's Radio Times give cheers to Hugh Laurie of "House" and jeers to Michelle Ryan of "Bionic Woman."

Forget about red states and blue states... what really divides Americans is whether they call carbonated beverages pop or soda. (Or coke if you're in the South.) Check out the detailed maps on The Great Pop vs. Soda Controversy to see where the battle lines are drawn on this contentious question.

GrokDotCom has compiled "The Ultimate Cheat Sheet" for writing online copy, with a whopping 101 links to helpful resources. Check out the whole treasure trove here and here.