NEO Web Service - Tracking changes around the world just got easier!
It's not often an online resource comes along and makes me say, "Wow!", but the NEO - NASA Earth Observations - web map service is just that kind of resource. NEO's mission is to help you picture climate and environmental changes happening on our home planet. To open up the NEO collection to all users they provide a WMS - giving anyone the ability to access maps from any application using a standardized programming interface. Just plug the service descriptions for NEO into Gaia to access it and start tracking changes around the world.