The GHS web site features numerous news feeds which allow you to see when new content has been added via a free subscription. In essence, the feeds themselves are just web pages, designed to be read by computers rather than people.

Here is a list of the major feeds on the site. You can subscribe to them via your web browser by clicking on the link. Alternatively, click on the subscribe button to add the feed to one of many different web services.

Articles Subscribe
Comments Subscribe
Articles and Comments Combined Subscribe

Each article also has its own feed comprising solely of comments made on that article. Look out for the orange RSS logo at the bottom of the page.

More information is available via the BBC or Wikipedia. There is also a very informative video available on YouTube.