RSS feeds are a way for content providers to send web site updates to users. Users can subscribe via a newsreader or, as I do, add them to a personal web portal page like iGoogle. The user’s feed reader is updated with the latest information as new material is added by the content provider. The USGS uses a variety of social media and RSS to push out late-breaking news, research notes, and a host of other information. Their Multimedia Gallery (http://gallery.usgs.gov/) feeds are particularly useful for teachers looking for materials to use in their courses. The gallery RSS feed alerts subscribers to new media as its added to their collections. Collections currently include:
Natural and Man-made Structures
Native American and Tribal Activities
Employees at Work
Biologic and Environmental Contamination
Most items in the gallery are in the public domain.