4C ran a conference called Climate of Hope which included Sir John Houghton as the keynote speaker. His address covered much of the scientific evidence for climate change and its predicted impacts before covering some of the key points of theology:
Presentation slides 13MB (click to download slides. The download starts automatically. It doesn't take you to another page, so it may look like it's not doing anything!)
Tearfund, Christian Aid, and A Rocha all have speakers who could come and speak about climate change at a church service or event.
To read / look at
The Met Office website has a lot of information on climate change, from a basic guide, to the latest scientific developments. There are videos, maps and