“Keep the emissions resulting from my lifestyle as low as I reasonably can. I accept that choices over what is reasonable are personal and I will respect others who make different choices to me.”
There is a lot of information available online n ways to reduce greenhouse gas (GHG) emissions. Note: Generally these refer to carbon emissions as carbon dioxide (CO2) is the most widespread form of greenhouse gas. For example, take a look at some of these sites
http://www.energysavingtrust.org.uk/domestic/
http://www.energysavingtrust.org.uk/domestic/drive-smarter