I have been having a lovely time searching for blogs and sites with RSS feeds that interest me. I can see my Reader becoming a little overcrowded very shortly!
A couple of quick google searches on 'rss feeds education' and 'rss feeds environment' (a topic we are passionate about at our school) returned a great range of options. I quickly found a couple of particular interest - Science Alert and Friends of the Environment. Two very interesting Australian sites with rss feed options.
Love it. I often find a good site and then it gets lost amongst my favourites list when another topic takes my interest. This way I'll get constant 'reminders'.