Over at ProTraveller, they've compiled a list of 20 places threatened by global warming:
The earth is getting warmer and warmer with each year that passes and that means we're going to see some significant changes in the land around us. For a few lucky places, global warming means positive things. For example, British Columbia is hoping that the extra few temperature points could mean a more Mediterranean climate that will boost their wine business and take industry away from wine hot spots like the South of France and the United States' Napa Valley. However, a great number of places aren't going to be nearly so lucky.
Definitely worth a look