The U. of Arizona put together an impressive seminar series on climate change this past fall. There were seven talks by different U of A professors, covering almost all important aspects of the “climate change problem.” The talks are now online.
I have a video iPod, and I downloaded the seminars and watched them during my recent trip to the AGU meeting. It’s a worthwhile way to pass a 4-hour plane trip. If you want to learn more about climate change, I recommend you check them out. (They also have audio-only versions.)