This is due to politics. If the chief editor of Journal A likes the prefix nano, you'll see nano in the titles. Then journalists read the abstracts, write a sto

This is due to politics. If the chief editor of Journal A likes the prefix nano, you'll see nano in the titles. Then journalists read the abstracts, write a story and proliferate the use of the word. This is not _exactly_ how it goes, but you get the point.