An RSS feed is basically a web page which contains a list of links to new or updated content for a particular web site. These pages are intended to be read by computer programs called news readers. News readers periodically check all the feeds you tell it to and inform you of any updates it finds.
Below are a list of all the RSS feeds which The Yorker provides. Simply add any of these feeds to your news reader and you will be informed as soon as a new article is published on The Yorker!