CERA have produced a video explaining some of the workings of the RAS here, on a website called Vimeo (sort of like Youtube but for grownups). Click on the photograph of Ivan to make it work.
The video is about 5 and a half minutes long and quite informative – good viewing.
Image may be NSFW.
Clik here to view.
Image may be NSFW.Clik here to view.
