>As regards publication titles it is, however, a common typographic practice among both British and U.S. publishers to capitalise significant words (and in the United States, this is often applied to headings, too). This family of typographic conventions is usually called title case. For example, R. M. Ritter's Oxford Manual of Style (2002) suggests capitalising "the first word and all nouns, pronouns, adjectives, verbs and adverbs, but generally not articles, conjunctions and short prepositions"
It is normal in the US. In the UK title case has been obsolete for decades. Apparently USA Today and Washington Post already switched[1]. It makes US newspapers look very old fashioned to me, well along with the rest of their retro styling.
