Stefan Geens of Ogle Earth has produced a very useful resource for Geographers, in the form of a new layer for Google Earth, containing a range of useful resources.
Thanks (once again) to Noel Jenkins for flagging this up on the SLN Forum
A project originally funded by the Royal Geographical Society (with IBG) with an Innovative Geography Teaching Grant to develop teaching ideas for using Google Earth in the Geography classroom, expanded to include ArcGIS Online in 2014