On the upper right of any browse or search results list, you will find the orange “RSS” icon. Clicking on this icon will allow you to arrange for RSS alerting. Additionally, if you have an individual user account, you can set up your RSS alerting from the Favorites pages.
Nature Publishing Group offers over 100 Web feeds for journals they publish in the life and clinical sciences including the journals Nature and Scientific American, science news feeds and feeds relating to jobs in the sciences.
Activate the radio button next to "Browse Journals available to me" then expand the alphabetical list, select the journal, and the RSS button is on the right side of the screen.