COTAP is an organization that was formed to "empower individuals and organizations in developed countries to address both climate change and global poverty."
http://cotap.org/home/mission/

Re-nourish is a website that provides online tools to help with sustainable development and living.
http://re-nourish.com/?l=about

Georgetown University-- "The University is pursuing broad-based, practical approaches to sustainability, including an ambitious commitment to cut our carbon footprint in half by 2020. On campus, we are implementing real-world sustainability solutions, using the campus as a living laboratory and developing a long-term sustainability strategy to guide our work." They have an Office of Sustainability that is used to enlarge their sustainability and sustainability goals.
http://sustainability.georgetown.edu/about

I've found all of these websites very helpful in learning about reducing your carbon footprint and ways to increase sustainable living; I hope you guys do too.