My take on this is a combination of both energy efficiency and reducing emissions - all of them, including NO2 and other noxious gases. I don't have a car, and being gay will never have children - what a huge saving that generates
I'll just repost the title of thread as some people either don't read it, or have difficulty understanding it:
Are You Aware Of Your Own Carbon Footprint? What are you doing to try and reduce it?