News feed stories only remain on TR's home page for about a month. After that, they go into the news archives (so that the home page loads quicker). You should be able to find what it is you are looking for by clicking on the the archived month below, or, alternatively try our search engine at the top of the page.
Many of the links attached to our news stories are to other web sites, whose page urls may change from time to time. This is particularly true of results pages. Please let us know if a link isn't working anymore, and we'll endeavor to fix it or point you towards what you're looking for.