Hi, I have found a couple of relevant sites for those interested in the factual part of climate change.
The field of science that provide the foundation for all earth observations is geodesy. You can read about what topics they address here
http://geodesy.unr.edu/ggos
The International Association of Geodesy site can serve as a portal for more information if you have a little knowledge about Earth sciences.
http://www.iag-aig.org
Global Earth Observation is crucial both for our understanding of the climate and for mitigation of climate change. A lot of useful information can be found here.
http://www.earthobservations.org
If you like to travel to exotic places AND learn something about the Earth at the same time you can visit this travelogue from China and Tibet.
http://www.geodeticjourney.info
A translation of the latest scientific news related to climate change can be found at Lilja - A bouquet of stories about the Earth. The latest is an explanation of the role of sea level and how we measure it for climate change applications. There will be a series of articles about Earth observation and geodesy here the coming weeks.
http://www.lilja.no (Ocean United - bigger than football)