So what is this RSS?

Really Simple Syndication (RSS) is a  format designed for sharing headlines and other Web content.  Instead of continually checking Web sites for new or updated content, RSS allows for this information to be automatically updated to your website, newsreader, or, in the case of Firefox, Safari, or Opera, and several others, your browser or email client.

So you would change this URL

http://www.greenpeace.org/eu-unit/press-centre/press-releases2

to this

http://www.greenpeace.org/rss/eu-unit/press-centre/press-releases2

and import that into your feed reader software, live bookmark, or web page.

For Firefox users:

This site is enabled for Live Bookmarks: you'll see this icon on the bottom right corner of the browser. Clicking on the icon and selecting an RSS feed will bring up the Add Bookmark dialog. Select 'OK' and you will see Live Bookmarks with the rest of your bookmarks. Many people find it especially convenient to save Live Bookmarks in their Bookmarks Toolbar folder.

Add Live Bookmarks manually

If you construct your own RSS feed as above,  you can manually create a Live Bookmark for the site. Go to the Bookmarks menu and select 'Manage Bookmarks'. Under the 'File Menu', select 'New Live Bookmark'. Create a name for the Live Bookmark and add the URL. New articles will appear as Live Bookmarks in Firefox.

Share your bookmarks

Why keep your bookmarks to yourself? Services like http://del.icio.us let you publish your own bookmarks as RSS feeds, so that other Firefox users can subscribe to your bookmarks through Live Bookmarks. Live Bookmarks and del.icio.us makes it easy to share cool sites you like with your friends.

You can also put your bookmarks into your own private RSS feed, to share your bookmarks among multiple computers. Spread the word!