Google Earth Climate Change Met Office Layer
The UK Met Office Hadley Centre with a variety of other agencies has produced a fantastic Climate Change layer for Google Earth. It looks at a change of 4 degrees on climate change and their associated possible impacts. Like all climate change mapos there is a degree of uncertainty but if I was to trust any scientific body to produce an accurate forecast then the Met Office would be top of my list. You can download the KML file here but you will need to have Google Earth installed first. Good video on Channel 4 news about the layer here.