There are a multitude of RSS readers available, and many web browsers have RSS support built-in.
If you are running Safari on Mac OS 10.4 then RSS feeds will be picked up automatically by showing you an icon on the right of the address bar, which you can click to display the feed in the browser window.
Firefox also has RSS support built-in, from the Biochemistry homepage you should see an orange icon in the bottom right of the browser window. You can click this to get a "Subscribe to..." menu. This will in turn create some "dynamic" bookmarks in your bookmarks menu, which will update as new items appear in the feed.
There are many RSS plugins for Internet Explorer, one that has proved reasonably good for the webmaster is Pluck, freely available from www.pluck.com