This is the easiest way to find a column on a particular word or phrase.
To search for a specific phrase, put it between quotation marks.
You can comment on any post without being registered on this site.
You do not need to use your real name (although it would be nice to do so) or your real email address.
All comments are, however, held for moderation, so it may take a day or two for yours to appear.
Almost all comments are approved (spam and personal abuse being the primary exceptions), but approval of a comment does not indicate agreement.
Sorry, but you are looking for something that isn't here.
Follow us on Twitter!
New! You have questions? How Come? has the answers!
400+ pages of science questions answered and explained for kids -- and adults!
11 queries. 0.212 seconds.
Switch to our mobile site